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, charged in a California fertility clinic bombing plot, was found unresponsive in federal custody and later pronounced dead at a Los Angeles hospital.

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.