PHILADELPHIA (CBS) – A man is in critical condition after a violent one-car crash in Philadelphia early Tuesday morning.

The accident happened at about 1 a.m. at the intersection of 5th Street and Olney Avenue in the city’s Olney section.

According to investigators, a male motorist lost control of his car and slammed into a parked car. The man was taken to an area hospital where he is listed in critical condition.

It was not immediately known why the driver lost control of his car.

The accident remains under police investigation.