Police flooded downtown Portland after a man was shot Monday morning under the west end of the Broadway Bridge, authorities said.

The incident occurred just before 10 a.m., said Sgt. Chris Burley, a Portland police spokesman. Police haven't found the shooting suspect.

The man suffered what was thought to be a serious gunshot injury that didn't threaten his life. He was taken to a hospital, police said.

A woman who declined to give her name to a reporter but lives nearby said she heard two gunshots, a pause, then four more gunshots. Before that, she had heard a woman arguing with a man.

She said she then saw a man run away wearing a black sweat shirt.

The man who was shot was conscious and talking to police after they arrived, the witness said.

Anyone with information is asked to call police at 503-823-0479. Police said they don't think there's an immediate danger to the public.

Jim Ryan of The Oregonian/OregonLive staff contributed to this report.