Baltimore County Police said Monday that detectives are investigating the theft of an off-duty Anne Arundel County police officer's service weapon from his personal vehicle Friday night in Towson.

"Any time a gun is taken during a crime, it's a serious safety issue, regardless of what the source of the weapon is," said Cpl. Cathy Batton, a county police spokeswoman, on Monday.

Batton said the officer had parked in a lot in the 8800 block of Orchard Tree Lane in Towson around 7:30 p.m. on Friday evening with his service weapon, a Sig Sauer P229 pistol, secured in his trunk.

When the officer returned to his vehicle three hours later, he noticed the driver's side window had been smashed, Batton said.

The officer checked his trunk for the service weapon, and the gun was missing.

Batton said a second vehicle was similarly burglarized in the lot that night. In that incident, the driver's side window was smashed and a purse stolen from the car.

That driver reported that she parked the car there at 7 p.m. Friday and returned to her car at 10:10 p.m.

Batton said the vehicles were processed for prints, and the handgun entered into the FBI National Crime Information Center.

Anne Arundel County Police have been notified of the stolen service weapon, she said.