BROWN DEER, Wis. (AP) -

Investigators say the victim in a fatal shooting at a suburban Milwaukee senior apartment complex knew the person who killed him.

Brown Deer police responded to a shooting at the Algonquin Manor Senior Apartments about 10 p.m. Monday. The man who was shot was taken to the hospital where he was pronounced dead on arrival.

Authorities say the shooting suspect was still on the scene and was arrested.

It's not yet clear what prompted the shooting.