A 28-year-old man suffered a broken arm and nose after being beaten with his own crutch in a violent assault at Barnsley Interchange.
Police are hunting three people believed to be teenagers in connection with the early-morning attack that occurred earlier this month.
The victim and his younger brother, aged 27, had been asleep on a bench at the Interchange, at around 4.15am on Wednesday, October 8 when the incident happened.
Police said the pair were woken when a girl started to removing clothing from one of their bags - with two young men who were with her then attacking the brothers.
The victim, who uses a crutch to walk, fell over and was then beaten by one of his assailants with the crutch - leaving him with a broken arm and broken nose.
He needed surgery for his broken arm and also suffered cuts and bruises in the attack.
His younger brother also suffered from bruising and a number of grazes.
The two unknown men and girl are thought to have left the area, still carrying the crutch, when they were disturbed.
Police are appealing for anyone with information about the assault to come forward.
A spokesman for South Yorkshire Police said: “The girl is described as white, between 15 and 16 years-old. She is thought to be around 5ft 2ins, slightly overweight with short blonde hair. She is believed to be wearing a blue blouse and blue trousers.
“The first man is described as white, between 16 and 18 years-old. He is thought to be around 5ft 2ins tall of slim build with short black hair with very short sides, which may have been dyed a light colour.
“The second man is described as white, between 19 and 21 years-old. He is thought to be of medium build with short black hair.
“Anyone with information is asked to contact police on 101 quoting incident number 65 of 8 October 2014. Alternatively, to report a crime anonymously, contact Crimestoppers on 0800 555 111.”