A mosque in Oklahoma City has been vandalized in what is being investigated by the FBI as a potential hate crime. The walls, doors and sidewalk of the American Muslim Association building were spray-painted with bizarre images including what appeared to be faces and pentagrams. The head of the state’s chapter of the Council on American-Islamic Relations said: “We call on the FBI to determine whether or not there was a bias motive for this vandalism and if it is linked to anti-Muslim backlash resulting from the Boston Marathon bombings.” At least two people were victimized by violent anti-Muslim attacks following the Boston bombings on April 19. The mosque in Oklahoma was the subject of a prior attack last year when it was hit with paintballs.