American officials have leaked information suggesting that the female attacker in San Bernardino pledged allegiance to ISIS on Facebook.
They say 27 year old Tashfeen Malik pledged support to the Islamic State group's leader Abu Bakr al-Baghdadi before or during that assault which left 14 dead.
They also say that her husband Syed Rizwan Farook appears to have communicated with foreign militants and individuals in nearby Los Angeles.
But White House Press Secretary Josh Earnest is holding back from any official attribution of motive for now.
IN: It's quite challenging...
OUT: ...these days
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