(CNN) — Four women and two men have been killed in a shooting at a youth welfare facility in the northern German city of Stade, police said on Monday. Stade police said several others were injured in the shooting. Five people died at the scene, while a sixth person succumbed to their injuries in hospital, police said. All were adults. The victims were employees of the facility, not residents, a German police official said in a briefing, Reuters news agency reported.