The Brief Milwaukee police are searching for a known suspect after three people were killed Saturday night. A manhunt is underway after police say a shooter killed three people Saturday night. Milwaukee police say the shootings are connected and domestic violence-related. Milwaukee Police were called to 21st and Pierce around 9:40 p.m. Saturday night to investigate. Police confirm the shooting is domestic violence-related and say they know who the suspect is, but that information has not been released.