POLICE are hunting a vehicle of interest that they believe was involved in the brutal bashing of Warnbro teenager Jimi Brewer-Joyce 12 days ago.

Rockingham detectives today called for public assistance to locate the blue 2005 model Ford Falcon sedan, in which three offenders had been travelling in before the 17-year-old was assaulted in Warnbro about 11pm on Saturday, July 21.

A police spokeswoman said officers had received several calls with information about the incident and had spoken to witnesses who had given a description of the vehicle that some of the offenders were driving.

It is believed there were three occupants in the car.

Jimi sustained shocking injuries, including a fractured skull, after he was bashed by a gang of 10 thugs wielding weapons.

He and three friends had been walking along Safety Bay Road when three cars containing 10 males parked around the corner, got out of their vehicles with baseball bats, hockey sticks, golf clubs and sticks and ran at the group, attacking Jimi with the weapons for up to two minutes.

Jimi was taken to Royal Perth Hospital with a fractured skull, facial injuries and bruising to the brain and right elbow. He has since been discharged.

Police have said they would investigate whether the assault was a case of mistaken identity or if it had been a random attack.

Police have urged anyone who saw the vehicle in the Rockingham area on the evening of Saturday, July 21 or has any information regarding the incident is asked to call Crime Stoppers on 1800 333 000.