Officials believe as the massacre on a county employee holiday party was underway Wednesday, suspect Tashfeen Malik pledged her allegiance to an Islamic State leader on Facebook, CNN reported Friday.
An anonymous U.S. official told the network Malik, the wife of fellow attacker Syed Rizwan Farook, posted support for IS leader Abu Bakr al-Baghdadi using an account registered to another name. The couple also took steps to delete their online postings in the days leading up to the attack.
Officials have not formally labeled the mass shooting, which left 14 dead and 21 wounded, an act of terrorism. They have also not offered a motive for the attack, and there remains no evidence that the Islamic State directed the couple to carry out the shooting.
“At this point we believe they were more self-radicalized and inspired by the group than actually told to do the shooting,” an unnamed official told The New York Times.
Malik was a Pakistani woman who entered the U.S. in 2014 on a so-called fiancee visa and became a conditional U.S. citizen when she married Farook. Both were killed in a shootout with police hours after the attack.
This post has been updated.