Milwaukee Police are investigating a homicide that happened around 10:50 p.m. in the 2500 block of W. Roosevelt Drive. A 41-year-old male suffered a fatal gunshot wound while in his vehicle. Officers and the Milwaukee Fire Department attempted to revive him however he passed away at the scene. There appears to have been an altercation between the victim and the suspect earlier in the night. A suspect is in custody. The investigation continues.