A 17-year-old boy has been stabbed in a brawl at a McDonald's car park.
The incident happened at a McDonald's south of Perth, with six people involved in the fight.
It started at roughly 10.30pm outside the Baldivis outlet, with a witness telling 7 News that two people were seen trying to smash a car window.
The witness then claims to have been chased and attacked, with a 17-year-old stabbed multiple times and currently in Royal Perth Hospital.
He has non-life threatening injuries.
Another 17-year-old has been taken to Rockingham General Hospital, and a third person is in Fiona Stanley Hospital.
Rockingham and Fremantle detectives are currently investigating.