SAN ANTONIO – A man was pronounced dead after a suspect walked into his house and shot him in the head on Thursday, according to San Antonio police.

The mother of the 20-year-old man, identified as Angel Zamudio Ruiz, called police around 3:16 a.m. to say that her son had been shot. Ruiz lived in a detached bedroom of the house on the 100 block of Gorman.

Police have detained a possible suspect. The suspect told investigators he was hanging out with the victim when two Hispanic males forced their way into the house. One of the men shot the victim and then fled in a vehicle.

San Antonio homicide detectives are investigating.