The man federal authorities accused of having supplied the explosive chemicals used in the bombing of a fertility clinic in California has reportedly died in federal custody three weeks after his arrest.
Authorities discovered Daniel Park, 32, unresponsive in the Los Angeles Metropolitan Detention Center (MDC) on Tuesday and took him to a hospital where he was declared deceased, prison officials said, according to The Associated Press (AP). Officials did not issue a cause of death.
A search of the Federal Bureau of Prison’s inmate database using Park’s first and last names yielded several results but only one was about a 32-year-old suspect bearing the same name being held at the MDC. “All visiting at this facility has been suspended until further notice,” a red alert for the MDC stated as of the time of this report.
Both Park and 25-year-old Guy Bartkus, accused of the May 17 bombing of a fertility clinic in Palm Springs, California, were suspected anti-natalists and pro-mortalists. Bartkus left “anti-pro-life” online, authorities said. “I think we need a war against pro-lifers,” he was suspected of having written.
“When people are lost and distraught, death is always an option,” Park once allegedly wrote online in 2016, according to the AP.
A Washington state man accused of providing large amounts of chemicals to make explosives for last month’s bombing of a fertility clinic in Palm Springs has died in federal custody, the U. S. Department of Justice confirmed. https://t.co/ePeNeoOWlB pic.twitter.com/ASuVpx9yps
— ABC7 Eyewitness News (@ABC7) June 24, 2025
Federal authorities arrested Park at John F. Kennedy Airport on June 3 following his extradition from Poland, according to the Department of Justice. He was accused of having provided Bartkus with large quantities of explosive precursor chemicals he would ultimately use to blow up the fertility clinic in Palm Springs May 17, killing himself. Park traveled to Europe four days after the bombing, according to federal prosecutors. (RELATED: ‘Chlorine Bomb’: Feds Stop Oregon Teenager From Going Through With Coordinated Mass Shooting Event)
PALM SPRINGS, CALIFORNIA – MAY 17: Investigators look at possible evidence near the American Reproductive Centers fertility clinic following a bomb blast on May 17, 2025 in Palm Springs, California. A suspected bomber is believed to have posted a manifesto to social media before the explosion. One person was confirmed dead at the scene, according to police. (Photo by David McNew/Getty Images)
Park first shipped approximately 180 pounds of ammonium nitrate to Bartkus, then traveled to the latter’s residence and stayed with him from Jan. 25 to Feb. 8 where they conducted experiments in Bartkus’s room and a garage, according to a federal affidavit. Bartkus had allegedly asked an AI chatbot for information about how to create powerful explosions with fuel and ammonium nitrate three days before Park arrived.
Park also “paid for an additional 90 pounds (40.8 kilograms) of ammonium nitrate” that Bartkus received days before the suicide bombing, federal prosecutors alleged.
Investigators would later allegedly find chemicals often employed in improvised bombs in the garage where the two suspects were believed to have run experiments using the chemicals.
Editor’s note: Headline updated to reflect that he was declared deceased in the hospital, according to reporting.
