Around midnight, police were called about an unknown problem involving a man and a woman in the 500 block of East Washington Avenue.
When officers arrived, the man went over a wall and ran into the backyard of a home. Police say he reached into the waistband of his pants, which is when they shot him.
The man, later identified as 27-year-old Ignacio Leon Jr., was shot twice in the upper body.
Police were still on scene Sunday morning to search for a weapon. Authorities say there were two other people in the yard at the time of the shooting. Investigators are searching for these people, who authorities believe might have removed the weapon from the scene.
No officers were injured during this incident.