Police say a 13-year-old girl was sexually assaulted on Thursday night while waiting at a bus stop in south Vancouver.

Authorities say the girl was approached just before 10 p.m. in the 6200-block of Knight Street by a man who tried to strike up conversation with her.

He then grabbed her by the shoulders, forcibly kissed her on the cheek and groped her.

Investigators say he was with another man who was not involved in the assault.

The girl was able to run away and report the incident. Police say she was visibly shaken, but unhurt.

The man is described as being in his 20s, 5-5 tall, medium skin colour, with short hair or balding, and with facial hair stubble. He was wearing a dark toque, blue jeans and a black leather jacket.

Anyone with information on the assault is asked to call the Vancouver Police Sex Crimes Unit at 604-717-3473.