MILWAUKEE (CBS 58) -- Milwaukee police are investigating a deadly shooting involving five people on Milwaukee's north side. 

Around 11 a.m. Saturday, March 21, Milwaukee police responded to the area of N. 37th and Darien St. for a shooting involving multiple people. 

A 20-year-old, two 29-year-olds, a 21-year-old and a 25-year-old were all shot.

The 25-year-old suffered fatal injuries and died after being transported to a local hospital.

The other four people involved all sustained non-fatal gunshot wounds and were all taken to a local hospital for treatment. 

Police believe that the shooting happened as a result of an argument. 

The investigation is ongoing and police are looking for 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.