A secret FBI informant who had been living in Detroit is charging that an FBI agent instructed him to break the law by spying on other Muslims and by stealing their mail. The informant, a Lebanese man named Marwan Farhat, made the charge in a Jan. 21 letter that he wrote before he left the country after his identity as an informant was exposed. A copy of the letter was obtained by the Detroit News. The informant wrote “I worked around the clock helping and assisting the government of the United States to put Muslims in jail. My life has been destroyed, abused and used to benefit your interests.” Farhat originally became an informant as part of a plea bargain after he was arrested on cocaine charges.