A Baltimore County police officer has died after she was struck Monday afternoon while responding to a report of a suspicious vehicle in suburban Perry Hall, according to Maryland Governor Larry Hogan. A Baltimore County Police Department spokesperson confirmed the officer would have been a four-year veteran of the force in July.

Shawn Vinson, the police department's spokesman, said law enforcement agencies are searching for at least one suspect. The officer hasn't been identified, CBS News reports.

"She was doing her job today ... and was critically injured from this altercation," Vinson said. "We are talking to witnesses and trying to find out what happened."

The officer was responding to the suspicious vehicle report at around 2 p.m., when the shooting occurred, according to police. The officer was transported to MedStar Franklin Square Medical Center, about seven miles away, but did not survive. Hogan announced her death in a tweet Monday afternoon.