Homicide detectives are investigating two separate shootings in St. Louis Sunday.

Police said the first shooting happened at around a little after four Sunday afternoon on the 5600 block of Delmar Boulevard. When police responded to the scene, they found a man in his 20s suffering from multiple gunshot wounds. He was unconscious and not breathing.

Then, about two hours later, a 38-year-old man was shot in the head. He was also unconscious and not breathing. 

Homicide detectives are investigating both shootings.