A day after a mass shooting in San Bernardino, California, authorities are trying to figure out why a couple would embark on a deadly killing spree.
Was it workplace violence or Islamic-inspired terrorism or both that left 14 people dead and more than a dozen injured?
Late Wednesday night, police announced that 28-year-old Syed Rizwan Farook and 27-year-old Tashfeen Malik were the two lone assailants in the mass shooting.
The couple had fled the scene of the shooting, after killing 14 people, they left behind three pipe bombs linked to a remote control trigger that failed to go off. Police said that they had also carried with them 1,600 bullets and had access to 3,000 more ammunition rounds at their home.
Police put the number of people injured in the attack on Thursday to 21. Ten are still being treated at area hospitals, with two in critical condition.
After a briefing from national security advisors, President Barack Obama, admitted officials could not rule out terrorism. Officials are still looking for a concrete motive for the attack.