Threatening letters sent to five California mosques referring to Muslims as "vile" and "evil" appear to be written by the same person, the FBI said Monday at a news conference in Los Angeles.
Islamic centers in L.A.'s Koreatown neighborhood, Northridge, Signal Hill, Pomona and San Jose all received copies of a handwritten letter this month addressing Muslims as "the Children of Satan" and warning that their "day of reckoning has arrived.