A suspect in the bombing of a California fertility clinic in May has died in federal custody, the Federal Bureau of Prisons said on Tuesday.

Daniel Park, 32, of Washington state, was found unresponsive Tuesday morning at the Metropolitan Detention Center in Los Angeles, the Bureau of Prisons said in a statement.

Facility employees “initiated life-saving measures” on Park who was then transported to a local hospital where he was pronounced dead.

The FBI and the U.S. Marshals Service were notified, the bureau said.

When asked about a cause and manner of death, the Bureau of Prisons provided a statement that did not specify if a cause or manner of death had been determined.

May 17 Bombing in Palm Springs

Park was arrested in June following the May 17 bombing at the clinic in Palm Springs, approximately 100 miles east of Los Angeles.

The bombing killed one person, the primary suspect, Guy Bartkus, and injured several others.

Officials alleged that Park had secured 270 pounds of ammonium nitrate for Bartkus and that he had shared Bartkus’ views.

Park was not in California at the time of the bombing and was detained in Poland by Polish authorities after the bombing. U.S. authorities took him into custody in New York.

The Bureau of Prisons said Park arrived at the Los Angeles facility on June 13 and was awaiting trial after being indicted for malicious destruction of property.

(Reporting by Christian Martinez; Editing by Noeleen Walder and David Gregorio)