
The Bosnian War criminal Slobodan Praljak, a former Bosnian Croat general, made international headlines during his trial at the International Criminal Tribunal for the former Yugoslavia (ICTY) in 2017. After the judges upheld his 20-year prison sentence for war crimes, including murder, deportation, and torture, Praljak dramatically drank from a small bottle, later confirmed to contain potassium cyanide, and declared, I have taken poison. This shocking act, which led to his death shortly thereafter, raised questions about how he obtained the poison and the security measures in place at the tribunal. The incident also brought attention to the broader context of the Bosnian War and the pursuit of justice for the atrocities committed during the conflict.
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What You'll Learn
- Type of Poison: Identified as potassium cyanide, a fast-acting toxic substance
- Source of Poison: Likely smuggled into the courtroom in a small container
- Moment of Ingestion: Slobodan Praljak drank it upon hearing his verdict
- Immediate Response: Medical team rushed in, but he died shortly after
- Impact on Trial: Incident delayed proceedings and sparked security reviews

Type of Poison: Identified as potassium cyanide, a fast-acting toxic substance
The poison that the Bosnian war criminal, Slobodan Praljak, drank during his trial at the International Criminal Tribunal for the former Yugoslavia (ICTY) was identified as potassium cyanide, a fast-acting and highly toxic substance. This compound is a salt derived from the combination of potassium and cyanide ions, and it is notorious for its lethal effects on the human body. Potassium cyanide works by inhibiting the cellular respiration process, specifically by disrupting the function of the enzyme cytochrome c oxidase, which is essential for the production of adenosine triphosphate (ATP), the cell's primary energy source. Without ATP, cells rapidly die, leading to systemic organ failure.
Potassium cyanide is particularly dangerous due to its rapid absorption into the bloodstream, whether ingested, inhaled, or absorbed through the skin. In the case of Praljak, the ingestion of this poison led to almost immediate symptoms, including convulsions, loss of consciousness, and respiratory failure. The speed at which potassium cyanide acts makes it a preferred choice for those seeking a quick and certain method of self-harm or suicide. Its historical use in mass suicides and as a chemical weapon further underscores its potency and lethality.
The identification of the poison as potassium cyanide was confirmed through toxicological analysis conducted post-mortem. The substance is odorless and has a bitter almond-like taste, though not everyone can detect this flavor. Its colorless and crystalline appearance makes it difficult to identify visually, adding to its insidious nature. The ease of access to potassium cyanide, often used in industrial processes such as metal plating and mining, raises concerns about its potential misuse, particularly in contexts of self-harm or malicious intent.
In the context of Praljak's case, the use of potassium cyanide highlights the dramatic and final nature of his act of defiance during the ICTY trial. The choice of this specific poison was likely deliberate, given its reputation for causing rapid and irreversible harm. The incident also raised questions about the security measures in place at the tribunal, as the introduction of such a dangerous substance into the courtroom went undetected. This event serves as a stark reminder of the extreme measures individuals may take to avoid accountability for their actions.
Understanding the properties and effects of potassium cyanide is crucial for both medical and forensic professionals. Treatment for cyanide poisoning, while challenging, involves the administration of antidotes such as hydroxocobalamin or sodium nitrite and sodium thiosulfate, which work to neutralize the cyanide ions and restore cellular respiration. However, the effectiveness of these treatments diminishes rapidly as time passes, emphasizing the critical need for immediate intervention. The case of Praljak underscores the deadly potential of potassium cyanide and the importance of vigilance in preventing its misuse.
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Source of Poison: Likely smuggled into the courtroom in a small container
The poison consumed by Bosnian war criminal Slobodan Praljak during his trial at the International Criminal Tribunal for the former Yugoslavia (ICTY) was later identified as potassium cyanide. This highly toxic substance is known for its rapid and lethal effects, making it a chilling choice for such a dramatic act. The question of how Praljak obtained the poison has been a subject of intense scrutiny, with the most plausible explanation being that it was smuggled into the courtroom in a small, discreet container.
Given the stringent security measures in place at the ICTY, the smuggling of any prohibited item, especially a deadly poison, would have required meticulous planning and execution. Potassium cyanide is a crystalline salt that can be dissolved in water, making it easy to conceal in a small vial, syringe, or even a capsule. Its odorless and colorless nature when dissolved further complicates detection, even during routine security checks. The small size of the container would have allowed it to be hidden in personal belongings, clothing, or even within the body, bypassing metal detectors and other screening methods.
The act of smuggling such a substance into a high-security courtroom underscores the determination and premeditation behind Praljak's actions. It is likely that he or an accomplice exploited a vulnerability in the security protocols, possibly during one of the many interactions with legal documents, personal items, or food and beverages. The ICTY's procedures for handling evidence, legal materials, and personal belongings of defendants could have provided an opportunity to introduce the poison without raising suspicion. For instance, a small container could have been concealed within legal papers or a personal item that was not thoroughly inspected.
Another plausible scenario is that the poison was introduced through a trusted individual, such as a member of Praljak's legal team or a visitor. Given the frequency of meetings between defendants and their legal representatives, it is conceivable that a small container of potassium cyanide could have been passed to Praljak during one of these interactions. The trust placed in legal professionals and the limited scrutiny they often face during security checks could have facilitated this transfer. Once in Praljak's possession, the poison could have been easily concealed until the moment he chose to ingest it.
The investigation into the incident revealed gaps in the security measures, particularly regarding the thoroughness of searches and the oversight of personal items. The ICTY's reliance on standard security protocols may not have accounted for the ingenuity and desperation of individuals facing severe consequences. The case highlights the challenges of ensuring absolute security in high-stakes environments, where even the most meticulous procedures can be circumvented by determined individuals. The smuggling of potassium cyanide in a small container remains the most plausible explanation for how Praljak obtained the poison, serving as a stark reminder of the complexities involved in managing security in international judicial settings.
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Moment of Ingestion: Slobodan Praljak drank it upon hearing his verdict
The moment of ingestion was a dramatic and unprecedented event in the history of international criminal justice. On November 29, 2017, Slobodan Praljak, a former Bosnian Croat general, stood before the International Criminal Tribunal for the former Yugoslavia (ICTY) in The Hague, awaiting the final judgment in his appeal. The courtroom was tense as Judge Florence Mumba read out the verdict, upholding Praljak's 20-year sentence for war crimes, including murder, deportation, and inhumane treatment of Bosnian Muslims during the 1992-1995 Bosnian War. As the judge concluded, Praljak's reaction was swift and shocking. He calmly reached into his pocket, pulled out a small vial, and declared in Croatian, "I, Slobodan Praljak, am not a war criminal. I oppose this conviction." With those words, he raised the vial to his lips and drank its contents in one swift motion.
The poison Praljak ingested was later confirmed to be potassium cyanide, a highly toxic substance that induces rapid death by inhibiting cellular respiration. This choice of poison was not arbitrary; potassium cyanide is known for its potency and the speed with which it acts, ensuring a quick and irreversible outcome. The moment Praljak drank it, the courtroom erupted into chaos. Judges, lawyers, and spectators watched in disbelief as Praljak slumped in his chair, his face contorting in pain. Medical personnel rushed to his aid, but it was already too late. Within minutes, Slobodan Praljak was pronounced dead, his act of defiance becoming the final, indelible mark of his life.
The act of ingestion itself was a meticulously planned moment, reflecting Praljak's determination to control his narrative and avoid the stigma of a war criminal's label. How he obtained the potassium cyanide remains a subject of speculation, but it is believed that he smuggled it into the courtroom, possibly with the assistance of an accomplice. The security breach raised serious questions about the ICTY's protocols, as such a dangerous substance should never have made its way into a high-security judicial setting. Praljak's ability to carry out this act underscored the lengths to which he was willing to go to reject the court's authority and its verdict.
The moment of ingestion also had profound implications for the legacy of the ICTY and international justice more broadly. Praljak's dramatic suicide was not just a personal statement but a symbolic challenge to the tribunal's legitimacy. By choosing to die rather than accept his conviction, he sought to undermine the court's moral authority and cast doubt on its findings. However, his act also served as a grim reminder of the gravity of the crimes committed during the Bosnian War and the deep-seated denial that persists among some of the perpetrators. The ICTY's work, though marred by this shocking event, continued to stand as a testament to the international community's commitment to accountability for atrocities.
In the aftermath of Praljak's ingestion of potassium cyanide, the world was left to grapple with the complexities of his act. It was a moment that transcended the individual and became a commentary on justice, guilt, and the enduring scars of war. The poison he drank was not just a means of ending his life but a final, defiant gesture aimed at reshaping his legacy. Yet, history will remember Slobodan Praljak not for his dramatic death, but for the crimes that led him to that courtroom in the first place. The moment of ingestion, while unforgettable, cannot erase the suffering he inflicted or the verdicts that sought to address it.
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Immediate Response: Medical team rushed in, but he died shortly after
In a dramatic turn of events during a United Nations war crimes tribunal, Bosnian Serb general Slobodan Praljak died after drinking poison in the courtroom. The incident occurred moments after judges upheld his 20-year prison sentence for war crimes committed during the Bosnian War. As Praljak stood to hear the verdict, he calmly declared, "I, Slobodan Praljak, reject your verdict with contempt," and then drank from a small vial he had concealed. The courtroom erupted in chaos as it became clear that Praljak had ingested a lethal substance. The immediate response was swift, with court officials and security personnel reacting within seconds to the unfolding crisis.
The medical team stationed at the tribunal was alerted immediately and rushed to Praljak’s side. Given the urgency of the situation, their primary goal was to stabilize him and identify the poison he had ingested. Initial efforts focused on assessing his vital signs and administering basic life support measures, including oxygen and intravenous fluids. The team worked swiftly to determine the nature of the poison, but Praljak’s refusal to disclose the substance complicated their efforts. Without knowing the exact toxin, the medical professionals were forced to rely on general antidotes and supportive care, which significantly limited their ability to counteract the poison effectively.
Despite the medical team’s rapid and coordinated response, Praljak’s condition deteriorated quickly. The poison, later identified as potassium cyanide, acted rapidly, causing severe metabolic acidosis, respiratory failure, and cardiovascular collapse. Cyanide is a fast-acting toxin that inhibits cellular respiration, leading to tissue hypoxia and organ failure within minutes of ingestion. The medical team attempted to administer specific antidotes such as hydroxocobalamin and sodium nitrite, but the advanced stage of poisoning rendered these interventions largely ineffective. Praljak’s rapid decline underscored the lethality of the substance and the critical importance of immediate and precise treatment in such cases.
The courtroom was evacuated, and Praljak was transported to a nearby hospital in The Hague, where further emergency measures were taken. However, the irreversible damage caused by the cyanide left the medical professionals with limited options. Efforts to resuscitate him, including advanced cardiac life support, were unsuccessful. Praljak was pronounced dead shortly after arrival at the hospital, marking a shocking and unprecedented event in the history of international criminal justice. The incident raised significant questions about security protocols within the tribunal and the potential risks associated with high-profile war crimes trials.
In the aftermath, an investigation was launched to determine how Praljak managed to smuggle the poison into the courtroom. The findings highlighted gaps in security screening procedures, leading to immediate reforms to prevent similar incidents in the future. The medical team’s response, though swift and professional, was ultimately unable to overcome the deadly effects of the poison. Praljak’s death served as a stark reminder of the lengths to which individuals might go to avoid accountability for their actions, even at the cost of their own lives. The incident also underscored the need for enhanced preparedness in handling such extreme and unforeseen events in judicial settings.
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Impact on Trial: Incident delayed proceedings and sparked security reviews
The incident in which Bosnian war criminal Slobodan Praljak drank poison in the courtroom had a profound and immediate impact on the trial proceedings. As Praljak stood to hear his appeal verdict at the International Criminal Tribunal for the former Yugoslavia (ICTY) in The Hague, he declared, "I am not a war criminal," and proceeded to drink from a small vial, later confirmed to contain potassium cyanide. This dramatic act forced an abrupt halt to the session, as judges, lawyers, and security personnel scrambled to respond to the unprecedented situation. The trial chamber was evacuated, and emergency services were summoned to attend to Praljak, who died shortly thereafter. This sudden interruption not only delayed the conclusion of the appeal but also left the court in a state of shock and disarray, necessitating an immediate reassessment of the day’s events and their implications for the trial’s continuity.
The delay in proceedings was significant, as the ICTY had to address both the legal and logistical fallout from Praljak's actions. The tribunal was forced to suspend all related activities to investigate how the poison had been smuggled into the courtroom, a high-security environment. This investigation included reviewing security protocols, interviewing staff, and examining the chain of custody for items brought into the court. The delay extended beyond the immediate aftermath, as the tribunal had to determine whether the appeal process could continue for Praljak’s co-defendants without him or if the entire case needed to be reassessed. This interruption also affected the scheduling of other cases, as the ICTY had to reallocate resources to manage the crisis, further slowing down the tribunal’s work during its final stages.
The incident sparked a comprehensive security review across international courts and tribunals, not just the ICTY. The fact that a lethal substance could be brought into a courtroom raised serious concerns about the effectiveness of existing security measures. The ICTY initiated an internal investigation to identify vulnerabilities in its screening processes, including metal detectors, bag checks, and the handling of personal items. This review extended to the treatment of defendants, as Praljak had been allowed to carry a small vial into the courtroom without detection. The findings prompted immediate enhancements, such as more rigorous searches, restrictions on personal items, and increased vigilance from security personnel. These changes aimed to prevent similar incidents in the future and restore confidence in the tribunal’s ability to ensure safety.
The security reviews also had broader implications for international justice systems, as other courts and tribunals examined their own protocols in light of the ICTY incident. Institutions like the International Criminal Court (ICC) and domestic courts handling high-profile cases reassessed their security measures, recognizing the potential for defendants to take extreme actions. This led to the adoption of stricter screening procedures, improved training for security staff, and greater coordination with law enforcement agencies. The incident underscored the need for constant vigilance and adaptability in securing judicial environments, particularly in cases involving war crimes or other sensitive matters where emotions run high.
Finally, the impact on the trial extended beyond procedural delays and security enhancements to the psychological and reputational dimensions of the ICTY’s work. The incident drew global media attention, raising questions about the tribunal’s handling of the case and its ability to manage high-stakes situations. While the ICTY ultimately concluded its mandate successfully, Praljak’s act left a lasting mark on its legacy. The tribunal had to balance transparency with the need to maintain order, ensuring that such an event would not undermine the credibility of international justice. The incident served as a stark reminder of the challenges inherent in prosecuting war crimes and the importance of robust security measures in safeguarding the integrity of legal proceedings.
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Frequently asked questions
Slobodan Praljak drank potassium cyanide, a highly toxic chemical compound.
It is believed he smuggled the poison into the courtroom, though the exact method remains unclear.
He drank the poison moments after his war crimes conviction was upheld, declaring, "I am not a war criminal," in an apparent act of defiance.
He collapsed shortly after ingesting the poison and was rushed to a hospital, where he died later that day.
Yes, it appears to have been premeditated, as he had access to the poison and chose to use it immediately after the verdict was announced.

























