BALLAJURA 17-year-old Kuol Akut has died after fighting for his life for six days at Royal Perth Hospital.
The teenager was bashed after an 18th birthday party in Girrawheen last Friday night.
Police found Kuol unconscious on Hainsworth Avenue about 11.45pm.
Officers had attended the area earlier in the night but identified no anti-social issues.
The party finished about 11pm, with about 180 guests leaving the house.
Kuol was a member of the Edmund Rice Lions Football Club.
In a separate incident in the same area, police also located an 18-year-old on the footpath near Meakers Way in Girrawheen, believed to have been a victim of assault.
He was taken to Sir Charles Gairdner Hospital on Friday night and discharged the next day.
More to come this afternoon.