San Antonio police are looking into a late Monday night shooting on the city's East Side.
Investigators say they think they know who the shooter is.
The shooting happened just before midnight in the 600 block of Potomac.
Witnesses tell police a 28-year-old man was let into the home to talk to a 32-year-old man.
The 28-year-old pulled out a gun, and when the other man tried to grab it, he was shot several times in the stomach.
The 32-year-old was taken to San Antonio Military Medical Center in critical condition.
The shooter fled and as of Tuesday morning, had not been apprehended.