Daniel Jongyon Park, the Washington state man charged with providing explosive materials to a suicide bomber who attacked a California fertility clinic last month, died Tuesday while in federal custody.

Daniel Park was found unresponsive Tuesday morning in his cell at the Metropolitan Detention Center in downtown Los Angeles.

Daniel Park, 32, was found unresponsive around 7:30 a.m. at the Metropolitan Detention Center in downtown LA and later died at a hospital, authorities said.