A Baltimore police officer was injured Sunday evening when his speeding patrol car, its siren blaring and its emergency lights flashing, crashed into a pickup truck on York Road in North Baltimore and flipped it onto its roof.

Officers who went to the scene of the accident said it appeared to have occurred when the Ford pickup pulled out of a parking lot at 5438 York Road in front of the officer's white-and-blue Chevrolet Impala. The officer, who was not immediately identified, was taken to Maryland Shock Trauma, the ambulance escorted by police cars.

"He'll be okay," Lt. Kyle Lee, a shift commander, said after pulling up to the scene, referring to the injured officer. "He's got a possibly broken ankle or broken leg."

Lee could not say what kind of a call had prompted the officer's emergency response.

Another officer said the accident had caused the driver of the blue pickup to hit his head on his steering wheel, but that otherwise he appeared to be uninjured. "He was very lucky," the officer said, adding that the pickup driver's wife "didn't have a scratch on her."

Traffic on York Road, a few blocks south of the Senator Theater, ground to a halt after the accident and was eventually diverted onto side streets. Debris from both vehicles littered the road.

After hitting the truck, the police car hit a red Mercury Tracer and then smashed into the brick facade of a Subway restaurant, demolishing some of the bricks and shattering two plate-glass windows. The front of the car was wrecked, its air bags deployed. The pickup lay upside-down across the thoroughfare with its lights still on, leaning against a parked Jeep.