The boy, who himself received head injuries during the fight in Cremorne, was refused bail on Sunday after being twice charged with wounding with intent to cause grievous bodily harm, police say.

He was allegedly fighting with two other 17-year-old boys on Spofforth Street about 12.30am before police arrived and arrested him.

One boy had been stabbed in the stomach while the other stabbed teen had wounds to his arm and leg.