California shooters likely planned multiple attacks — U.S. official

U.S. investigators are increasingly convinced the California shooters planned multiple attacks, given their stockpile of weapons, and are looking at whether the Pakistani woman involved radicalized her American husband, officials said on Sunday, according to an exclusive report by Reuters.

Investigators believe the weapons cache collected by Tashfeen Malik, 29, and her husband, Syed Rizwan Farook, 28, points to more attacks but they do not have evidence on other possible targets, a senior U.S. government source told Reuters.

The couple stormed a gathering of his work colleagues in San Bernardino, California, on Wednesday, opening fire with assault-style rifles and killing 14 people. The pair were killed a few hours later in a shootout with police.

U.S. authorities were trying to learn what contacts Malik might have had with Islamic militants in Pakistan and Saudi Arabia, where she grew up, the official said on condition of anonymity.

They lack clear evidence that the wife was radicalized overseas or that she in turn radicalized her husband, though they are actively investigating that, the official said.

Authorities are investigating the shootings as an act of terrorism.