San Antonio police are investigating after gunshots were fired outside its headquarters on Saturday night.
According to Fox San Antonio, the reports of shots fired came at about 10 p.m. There were no reports of any officers being struck.
San Antonio police Chief William McManus said authorities were questioning a suspect and there were several shell casings found in an alley. He said there was slight damage to the building.
"We are not going to be targets; we are not going to allow officers to be targets," he said. "This is not open season on police officers here in San Antonio or anywhere else. We're not going to allow that to happen."
The station reported that the building was closed off as the investigation continues.
According to the San Antonio Express-News, police were searching for a man described only as being in an orange shirt and blue pants.
The latest incident comes days after five police officers were killed in Dallas during a protest against the recent police shootings of African-American men.