A security guard at a Red Bird apartment complex fatally shot a man after the two got into an argument Saturday night, Dallas police say.

Officers were called about 10:45 p.m. to the complex in the 8000 block of Leigh Ann Drive, near Wheatland Road and Interstate 35E, where an armed security guard had been trying to break up a party after the complex's curfew when he got in an argument with a man.

After the guard requested backup from a co-worker, he and the man he had been arguing with got into a fight, police said.

The guard shot the man during the struggle, police said. The man, identified as 38-year-old Jorge Olguin, was taken to Methodist Dallas Medical Center, where he died.

Police did not provide the name of the security guard, whom they released after questioning. A grand jury will decide whether to indict the guard.