Washington Man Arrested for Supplying Bomb Materials in Palm Springs Fertility Clinic Attack

A Washington state man is in federal custody after allegedly conspiring with the suspect behind the May 17 car bombing of a fertility clinic in Palm Springs, which investigators have described as the largest bombing scene in Southern California in recent history.

Daniel Park, 32, of Kent, Washington, was arrested Tuesday night at John F. Kennedy International Airport in New York after being deported from Poland. According to U.S. Attorney Bill Essayli, Park was charged Wednesday with providing and attempting to provide material support to a terrorist.

Authorities allege that Park aided Guy Edward Bartkus, 25, of Twentynine Palms, who detonated the car bomb that devastated the American Reproductive Centers clinic at 1199 N. Indian Canyon Drive. Bartkus was killed in the explosion.

Federal prosecutors say Park shared Bartkus’ extremist, anti-family ideology and provided key bomb-making materials. Park is accused of shipping approximately 180 pounds of ammonium nitrate—commonly used in homemade explosives—to Bartkus and coordinating another 90-pound shipment.

“During the investigation, law enforcement learned of Bartkus’ pro-mortalist and anti-pro-life extremist ideology,” said Essayli. “We also learned that the bomber had help.”

According to the FBI, Park visited Bartkus for about two weeks in early 2025, during which time the two conducted experiments in Bartkus’ garage. Investigators later recovered chemical precursors and lab equipment at the residence.

FBI Assistant Director Akil Davis stated that Park possessed a bomb-making recipe similar to the one used in the 1995 Oklahoma City bombing. Authorities believe Park and Bartkus met online due to their shared radical beliefs.

The May 17 explosion caused extensive structural damage to the clinic and nearby buildings, with a debris field stretching approximately 250 yards. While four people were injured, none suffered serious harm. Fortunately, the clinic's stored embryos and other critical materials were not destroyed.

Bartkus reportedly tried to livestream the explosion, but the attempt failed. No other bombing targets have been identified, and the full scope of the explosive device is still under investigation.

Park is expected to appear in federal court in Brooklyn before being extradited to California to face charges.

The Palm Springs Police released a statement following Today's press conference, "The Palm Springs Police Department is aware of an arrest made by the FBI in connection with the May 17 bombing incident. We appreciate the ongoing work of the FBI and the Joint Terrorism Task Force as they continue their investigation. Our department remains fully committed to working with our federal partners. Keeping our community safe is our top priority, and we will continue working closely with the FBI to make sure that happens.

We ask our community members to avoid speculation, as this remains an active investigation. The FBI is leading the case and continues to keep us informed. We will continue to share updates with the public as information becomes available and appropriate to release."