Conspirator in Palm Springs fertility clinic bombing found dead in Los Angeles prison.

A man charged with supplying explosives for the bombing of a fertility clinic in Palm Springs, California, has died in federal custody, officials confirmed on Tuesday. Daniel Jongyon Park, 32, was discovered unresponsive in his cell at the Los Angeles Metropolitan Detention Center at approximately 7:30 a.m. Authorities from the U.S. Bureau of Prisons reported that staff attempted to revive him, but he was later pronounced dead at a nearby hospital. The specific cause of his death remains undisclosed.

Park was apprehended following a dramatic series of events that began shortly after the explosive attack on May 17, 2025. In the immediate aftermath, he fled to Poland, but four days later, he was extradited to the United States, where he was arrested upon arriving at John F. Kennedy International Airport in New York City earlier this month. Subsequently, he was transported back to California to face charges and had been held at the detention center since June 13.

Investigators revealed that Park played a pivotal role in the bombing by supplying nearly 300 pounds of ammonium nitrate to 25-year-old Guy Edward Bartkus, the alleged bomber. This included 180 pounds shipped months prior to the attack and an additional 90 pounds dispatched shortly before the incident. According to the U.S. Department of Justice, Bartkus had researched methods to combine ammonium nitrate with fuel for the purpose of constructing powerful explosives. The duo reportedly conducted tests at Bartkus’ garage to formulate an explosive mixture reminiscent of that used in the devastating 1995 Oklahoma City bombing.

The resultant car bomb detonated outside the American Reproductive Centers in Palm Springs, causing significant structural damage, injuring four individuals, and reverberating a mile away. Tragically, Bartkus died in what was described as a suicide bombing. Authorities have characterized the explosion as a terrorist attack, noting that Bartkus left behind disturbing writings that expressed nihilistic views and an anti-procreation ideology, signaling his extremist beliefs.

Park, who was also reported to harbor similarly radical views, faced charges of providing material support to terrorists. However, officials have not determined whether Park was fully aware of Bartkus’s specific intentions regarding the bombing. The investigation into this case continues to unfold as federal authorities work to uncover the details surrounding the tragic events in Palm Springs.

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