A police officer's head was repeatedly smashed into concrete in Melbourne when a group of thugs attacked him and a colleague as they tried to arrest a man over an alleged assault.
Three teenagers, including a 13-year-old, have been charged with supplying drugs at an under-18s dance festival at Sydney Olympic Park.
A man is in a stable condition in hospital after he was stabbed in the neck at a park in western Sydney.
Two men who were arrested after a Melbourne man was shot in the head have been released.
A third person has been charged over drug supply at the Secret Garden music festival in southwest Sydney.