An Aussie Rules football match had to be abandoned after fans invaded the pitch and a goalkeeper was hit in the face with a metal trash can.
The trouble started in the 20th minute of the Melbourne derby on Saturday when the referee stopped play after flares were thrown onto the pitch.
Video on social media appears to show Melbourne City goalkeeper Tom Glover kicking one of the flares back into a rival Melbourne Victory fan stand behind him.
Within seconds, they charge over the barrier and rush towards him, with security unable to prevent him from being hit with a metal trash can filled with white powder.
The video shows City players and subs running to protect the keeper as referee Alex King also makes a hasty retreat.
Former Manchester United player Nani was among the players forced off the pitch and looked stunned as he watched the scrum.
Goalkeeper Glover was later pictured lying down as he received medical treatment in the dressing room and the club tweeted that he likely had a concussion.
The Australian Professional League said in a statement that the referee was also injured, but did not give details.
Football Australia, the game’s governing body, said the scenes at AAMI Park were “shocking” and warned against penalties.
He added: “Such behavior has no place in Australian rules football, with a full investigation by Football Australia due to begin immediately, where strong penalties will be issued.”