Quite possible and that wouldn't surprise me. But not every act of violence is jihad. It well could be that, or it could be as simple as a nasty breakup. Time will tell.
In any event, it's horrible and tragic, and sympathies to the families, co-workers, and friends of the victims.
Prayer for everyone involved.
His twitter account complained that the camera man got him fired and that the news reporter made racist comments. He contacted the EEOC.