San Antonio police released body camera footage of a shootout with a suspect while serving an arrest warrant last month that injured an officer and the gunman.

The incident happened shortly after 5 p.m. June 16 when four SWAT unit officers were trying to execute an arrest warrant on a 35-year-old suspect identified as Roman Pena, the police department stated in a news release. When officers in an unmarked vehice approached Pena inside his parked vehicle, they saw he had a gun.

Pena began shooting at police, and the officers returned fire. In the body camera footage, one officer is seen firing through a cruiser's windshield during the exchange.

Pena and an officer were struck in the shooting. A round grazed the officer in the upper thigh, and Pena was in the hand and shoulder.

Both were rushed to hospital, but no details were released on their conditions. No one else was injured in the shooting. 

Pena faces four counts of aggravated assault against a peace officer. Police were originally arresting him on a prohibited weapons charge.

The shooting is under investigation.