Shannon Jones was shot in the lower abdomen and taken to OU Medical Center. He was having surgery and was in critical condition, Oklahoma City police Lt. Jay Barnett said.
Police responded to a call of shots fired about 12:30 p.m. at 1627 Heyman in the Will Rogers Courts housing development.
Witnesses told police the two men were arguing and then went outside, where one of them pulled out a gun and shot the other, Barnett said.
Police were looking for the shooter, who fled the scene of the shooting in a white Lexus, Barnett said. The shooting suspect is the father of a child whose mother is dating Jones, Barnett said.