An initial Arabic broadcast on al-Bayan, Isil daily online radio broadcast, announced that "two followers of Islamic State attacked several days ago a center in San Bernadino in California".
The broadcasts followed the FBI's disclosure on Friday that Malik had posted a pledge of allegiance to Abu Bakr al-Baghdadi, the group's leader, on Facebook shortly before the deadly assault on the Inland Regional Centre, where her husband worked as an environmental health inspector.
“She started taking part in religious activities and also started asking women in the family and the locality to become good Muslims,” a relative of Malik in Pakistan who asked not to be named told the LA Times.
The relative described how she would speak to someone in Arabic on the Internet until late into the night, a language that the rest of the family did not understand.
Malik was the first to pull the trigger when the couple gunned down her husband’s work colleagues at a Christmas party, it was revealed this weekend.
Although she only reportedly swore allegiance to Abu Bakr al-Baghdadi, Isil’s leader, the day before the murders on Facebook, the equipment used, which included homemade pipe bombs, and military vests, indicated it had been months in the making.