SAN ANTONIO -

An off-duty San Antonio police officer held a gun to his wife's head in front of their children during a domestic disturbance at their home, Police Chief William McManus said Friday.

Officer Daniel Lopez, 42, was arrested and charged with aggravated assault with a deadly weapon and deadly conduct following the incident, San Antonio police spokesman Roger Zuniga said. Lopez was also placed on administrative leave.

Police were called to Lopez's home in the 100 block of Whitecliff near Southwest Loop 410 and Valley Hi at 11:30 p.m Thursday.

"Officers arrived there and found that one of our officers, officer Daniel Lopez, was in the house and he had apparently been holding his wife in the house," said McManus.

Witnesses said they saw Lopez hold a gun to his wife's head. Police surrounded the house and blocked off several streets, and about 20 minutes later, Lopez came out of the house and was taken into custody without incident.

"I think (the wife) had some minor injuries, but nothing serious," said McManus. "And the children were not injured."

McManus said Lopez already was on administrative duty following an incident at his home in June. McManus said in that earlier case, Lopez fired a gun into the air. Lopez's service weapon was taken away in that incident. He had a different gun Thursday night, McManus said.

There was also another incident with Lopez four years ago.

"I don't know if it was at this address or not, but there was some type of incident," said McManus. "I'm not sure what it was, but we did do an administrative review on it."

Lopez is an 11-year veteran of the department. He is being held on bonds totaling $85,000.

Reporter Stephanie Serna contributed to this report.