Tashfeen Malik praised the Islamic State group as she and her husband launched Wednesday’s gun massacre in San Bernardino, says an executive for the social network.
According to law enforcement officials, the Pakistan-born 27-year-old pledged loyalty to the extremist organisation’s leader, Abu Bakr al-Baghdadi.
She made the declaration on Facebook using an alias, then deleted the message later.
With her spouse, 28-year-old Syed Farook, she massacred 14 of his colleagues and injured another 21 during a holiday party at a social services centre.
Malik, who grew up in Saudi Arabia, came to the US in 2014 under a K1 fiancee visa, sponsored by her American citizen husband.