Investigators believe the married couple who massacred 14 people in California last week – the U.S.-born husband and his Pakistani wife – had been radicalised “for some time,” but no clues pointing to an international plot have yet emerged, the FBI said on Monday.
Authorities also have evidence that Syed Rizwan Farook, 28, and his spouse, Tashfeen Malik, 29, had engaged in firearms target practise near their Southern California home, at least once within days of last week’s deadly shooting rampage, according to the FBI.
The latest disclosures in the FBI-led investigation came as San Bernardino County employees began returning to work under tighter security, five days after Farook, an environmental health inspector for the county, and his spouse opened fire with assault-style rifles on a holiday gathering of his colleagues.
The couple were killed in a shootout with police several hours after their attack on Wednesday morning in a conference room at the Inland Regional Center social services agency in San Bernardino, about 60 miles (100 km) east of Los Angeles.
The FBI said last week that authorities are investigating the mass shooting as an “act of terrorism,” noting that Malik, a Pakistani native who lived most of her life in Saudi Arabia, was believed to have pledged allegiance on Facebook to the leader of the militant group Islamic State.
If the mass shooting – the deadliest burst of U.S. gun violence in three years – proves to have been the work of people inspired by Islamic militants, it would mark the most lethal…