The FBI is facing a class action lawsuit over the spying on members of a California mosque. On Tuesday, the American Civil Liberties Union and the Council on American-Islamic Relations accused the FBI of violating the constitutional rights of hundreds of members of a mosque in the town of Irvine. Former government informant Craig Monteilh has acknowledged he posed as a Muslim convert to lure mosque members to work out with him at local gyms. Monteilh says FBI agents would then press him to obtain information on his workout partners in the hopes of one day pressuring them to become informants. According to the suit, FBI agents instructed Monteilh to collect email addresses, phone numbers and other personal information of mosque members, telling him that Islam is “a threat to national security.”