Police are appealing for information after a 14-year-old boy's head was slammed off a car with so much force that it smashed a window.
The brutal attack on the teenager, who was wearing a clown mask, took place at the Saint George Avenue area at around 7pm on Halloween October 31.
It is said his mask had frightened some children.
A police spokesman said: "An unknown man then approached him and is said to have assaulted him, pushing his head into the rear window of a Range Rover parked nearby, smashing the glass.
"The teenager attended hospital, where he was treated for minor injuries.
"The suspect is described as white, around 6ft 4ins tall, of heavy build, with short ginger hair and a full beard."
Anyone with information is asked to call 101, quoting crime reference numbers 2148449 and 2148184.