Police are hunting for a violent carjacker after a woman was punched and threatened with a knife at Chadstone Shopping Centre.

The woman fought off the violent attacker in an underground car park at the shopping centre last Monday.

Police want to speak to this man about an attempted carjacking.

Police have released an image of a man they would like to talk to about the incident.

The woman was near her car when a man approached her about 7.30pm, held a small knife to her face and demanded her car keys.