Louis White, 60, of Warner Springs was charged Thursday with mailing threatening communications. He is being held in a Riverside County jail on state charges and is expected to be transferred to federal custody in the coming weeks, according to the U.S. Department of Justice.

The Islamic Center of Temecula Valley reported Aug. 26 that it received a letter threatening to kill members of the mosque. The letter included a drawing of a bearded face with crosshairs and an offensive reference to Allah, according to an affidavit filed with the federal complaint.