An 11-year-old girl has been grabbed by the waist and pulled to the ground by a stranger who then fled in Lawnton, north of Brisbane.

Queensland Police have asked the public for help after receiving a report of the attack on the Francis Road overpass at 3.20pm on Saturday.

A man approached the girl and pulled her to the ground before running away toward a dark coloured SUV on Park Lane, police said.

Detectives have released an image of a vehicle of interest, a black Holden Captiva, believed to have been the car that the man fled in.

The girl did not suffer any physical injuries.

The man is described as Caucasian in appearance with a shaved head, in his early 20s, wearing a light blue T-shirt, running shoes and black shorts.

AAP