MILWAUKEE (CBS 58) -- The Milwaukee Police Department is searching for a suspect after a man was shot and killed late Tuesday night. 

Police say the shooting happened on W. Lisbon Ave. near N. Ripon Pl. at 11:35 p.m. on September 6. 

A 50-year-old man died on the scene despite lifesaving efforts by first-responders. 

This investigation is ongoing and Milwaukee Police continue to seek unknown suspect(s). Anyone with any information is asked to contact Milwaukee Police at (414) 935-7360 or to remain anonymous, contact Crime Stoppers at (414) 224-Tips or P3 Tips.