Suspect , 28 , arrested on assault with a deadly weapon charge , FBI says . He allegedly made comments about Islam , FBI says . No motive for the shooting has been established , authorities say . The Family Research Council promotes conservative social policies .
Suspect , 28 , held on assault with a deadly weapon charge , FBI says . Suspect allegedly made comments about organization , official says . No motive for the shooting has been established , authorities say . The Family Research Council promotes conservative social policies .