A Toronto police constable is being treated for serious injuries after he was hit by a car while doing paid-duty work for a film crew in the downtown core early Friday morning.

The male officer, who works in traffic services, suffered multiple fractures when the collision occurred near the intersection of Bathurst and Front streets at about 2:20 a.m.

Traffic services spokesman Const. Clint Stibbe said the officer was asked to close the intersection for the private company he was working for so a crew could record video from atop the Bathurst Street bridge.

The officer was working for a small production that did not involve any lighting, trucks or rigs.

When the officer exited his vehicle, he was hit by a Toyota Corolla that was being driven by a 38-year-old man, Stibbe said.

The southbound car was approaching Front Street.

The 43-year-old officer, who has three years of service with the police force, broke through the car's windshield, leaving a gaping hole in the windshield, and was carried a short distance before the car came to a stop just south of the intersection.

β€œHe was thrown into the vehicle, so he basically had gone through the windshield (and) into the motor vehicle,” Stibbe told CP24.

The driver stopped at the scene and provided first aid to the officer before emergency personnel arrived, police told CP24 reporter Cam Woolley.

The officer was rushed to a trauma centre, where he underwent treatment for serious but non-life-threatening injuries.

A police officer at the scene told CP24 that the injured officer suffered fractures to his shoulder, arm and leg. It is not known if additional injuries were discovered by hospital staff.

Meanwhile, police continue to investigate the cause of the collision to determine whether charges are warranted.

Stibbe said it is too early to determine the cause, but alcohol was not a factor.

The Ministry of Labour is also investigating.

Anyone with information about the incident is asked to call police at 416-808-1900 or Crime Stoppers anonymously at 416-222-TIPS (8477).

With files from CP24 reporter Cam Woolley

@ChrisKitching is on Twitter. For instant breaking news, follow @CP24 on Twitter.