THREE teenagers racially abused and assaulted a train guard at Meadowhall station.
Police are appealing for witnesses to come forward after the incident.
Investigating officer PC Mark Mason said: “This was a frightening experience for the train guard who was left shaken by the actions of this group.
“The victim was simply doing his job and to be subjected to this kind of behaviour is completely unacceptable.
“No one should be made to feel fearful for their safety on the rail network.”
PC Mason added: “The three youths boarded a train at Chapeltown to Meadowhall without tickets.
“When challenged by the train guard during a routine ticket check they subjected him to racist abuse.
“When the train arrived into Meadowhall the three teenagers then attacked the guard, throwing punches and hitting him on the neck.”
The first youth is described as short, aged around 15, of medium build with brown hair.
He was wearing a brown jacket, a woolly hat and a brown bag.
The second is aged around 16 with curly brown hair, a chubby build, approximately 6ft tall and was wearing a black or dark blue hoody, blue jeans and white trainers.
The third youth is around 16 years old, around 6ft 1ins in height, with brown hair and of a skinny build.
He was wearing a hooded top with a black jacket over the top, black-rimmed glasses and blue jeans.
The incident took place at 9.45pm on Wednesday, March 9.
Anyone with information can call British Transport Police on 0800 40 50 40 or Crimestoppers anonymously on 0800 555 111.