(Portland, OR) -- Police say at least one person is dead, following a shooting involving both Portland and Gresham police officers. Authorities say the shooting happened as officers were responding to a report of a possible domestic-violence incident. Officials say officers encountered a man in a vehicle in the parking lot of a plasma center on Northeast Glisan Street and exchanged gunshots with him. Police say the man died at the scene, and may have been related to people who died in the domestic-violence incident. Updates from police on the situation are forthcoming.