LONG BEACH (AP) — A man walked into the Southern California law firm where he worked and shot two men Friday before turning the gun on himself, police said.

Police arrived to find the gunman and one victim dead and learned that the second victim had driven himself to a hospital, Long Beach police Sgt. Brad Johnson said at a news conference.

The injured man was in stable condition.

Police didn’t fire any shots, Johnson said. A SWAT team searched the rest of the building and no other victims were found.

The gunman’s motive had not yet been determined, but authorities emphasized it was not a case of an active shooter targeting as many people as possible.

“This incident was workplace violence,” Johnson said.

Video showed people running from a two-story office building shouting about a shooting inside.