CCTV images of an alleged train sex attacker have been released by British Transport Police (BTP) after a desperate search of Bradford Interchange by officers proved fruitless.

A 19-year-old woman was left shaken and shocked after the attack on a train travelling between Stalybridge and Leeds on Thursday, August 23 during rush hour.

The victim, from Leeds, was travelling on the 17.11 Manchester Piccadilly to Scarborough service when she was assaulted by the man at 5.30pm. They both disembarked at Leeds where the woman raised the alarm, while the man is thought to have changed on to a Bradford train, which police then tried to intercept.