A 47-year-old man has suffered life-threatening injuries during a brawl at a Yokine park in the early hours of this morning.
A police spokeswoman said it was believed there had been an altercation involving a group of people at Yokine Reserve about 2:15am.
An ambulance was called to the scene to treat the man who had suffered severe head injuries in the brawl.
He was taken to QEII hospital in a critical condition. No arrests have yet been made over the assault.
Anyone with information on the incident is asked to call Crime Stoppers on 1800 333 000.