PHILADELPHIA (CBS) - Philadelphia Police are searching for a man they say shot a woman in the mouth while she was waiting at a bus stop Saturday night.

It happened in the 6600 block of Ogontz Avenue a little after 7:30 p.m. Authorities say a 20-year-old woman was shot by a man described to be black with a full beard and wearing a gray T-shirt. The victim was rushed to an area hospital where she is reportedly in critical condition.

Authorities say the man was last seen fleeing south on Ogontz Avenue in a gray Chrysler minivan.

There is no word on a motive. Police are investigating.