A D.C. police sergeant shot and wounded a dog Sunday, saying it ran toward her outside a Prince George’s County dog park with bared teeth, according to law enforcement authorities.

The incident remains under investigation by police in Greenbelt, Md., and in the District as well as by animal control officials in Prince George’s. A D.C. police spokesman confirmed the shooting when contacted Thursday night. It had not been previously disclosed.

Authorities declined to release the name of the police officer.

George Mathews, a spokesman for the Greenbelt Police Department, said the shooting occurred about 6:30 a.m. Sunday at a dog park at Hanover Drive and Hanover Parkway, near the Baltimore-Washington Parkway and the Capital Beltway.

Mathews said the sergeant called 911 to report firing her weapon. She told police that she was walking her small beagle-mix just outside the park when a dog resembling a pit bull “ran toward her in an aggressive manner with the dog’s teeth showing.”

The sergeant told police that she tried to pull her dog out of the way, putting it behind her, but that as the other dog moved closer, “she feared for her safety,” pulled out her gun and fired a single shot. The sergeant said the dog then ran back into the dog park and to its owner, who had two other dogs with her.

Mathews said the sergeant tried to talk with the owner but that the owner appeared confused by what had happened and thought the dogs had been in a fight.

The owner took her dogs and drove away, Mathews said. Hours later, at about 5:40 p.m., Mathews said the owner called police to complain that her dog had been bitten. The spokesman said that police investigated and discovered that her dog had been shot.

Adding to the confusion, Mathews said, the owner of the wounded dog is hearing impaired. Her name was not released.

No criminal charges have been filed.