San Bernardino shooters ‘planned multiple attacks’

US investigators are increasingly convinced the California shooters planned multiple attacks, given their stockpile of weapons, and are looking at whether the Pakistani woman involved radicalised her American husband, officials said.

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 US 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.