In November 1977, five WUO members were arrested on conspiracy to bomb the office of California State Senator John Briggs. It was later revealed that the Revolutionary Committee and PFOC had been infiltrated by the FBI for almost six years. FBI agents Richard J. Gianotti and William D. Reagan lost their cover in November when federal judges needed their testimony to issue warrants for the arrest of Clayton Van Lydegraf and four Weather people. The arrests were the results of the infiltration.