Report: Farook was in touch with more than one international terrorism suspect

San Bernardino shooter Syed Rizwan Farook was in touch over the phone and via social media with more than one international terrorism subject who the FBI were already investigating, law enforcement officials said.

It appears that Farook was radicalized, which contributed to his motive, though other things — like workplace grievances — may have also played a role, other law enforcement sources said.