Police are investigating after a train passenger in Hull was left with a broken nose following an unprovoked headbutt from a stranger.
The incident occurred on Saturday evening's 7.47pm York to Hull service.
The 51-year-old victim, from the Goole area, was travelling with his wife at the time.
British Transport Police (BTP) released a statement about the incident, appealing for witnesses to come forward.
PC Stewart Rankin, who is leading the investigation, said in the statement: "As the train approached Howden station, they both got up and stood at the rear doors in the front carriage ready to depart.
"A man then approached the victim and without any warning or provocation he headbutted him a number of times in the face and head.
"The victim sustained cuts to his face, severe bruising and a suspected broken nose.
"The train then arrived into the station and the attacker left the service, climbed in to a silver coloured Range Rover and drove away from the station."
The man has been described as white, approximately 30-years-old, 5ft 9, of medium build and with mousey brown hair. He was wearing a black jacket, pale pink shirt and black trousers and shoes.
Anyone with information is asked to contact BTP on 0800 40 50 40 quoting background reference B12/NEA of 28/08/2013.
Four nurses save train driver having heart attack
Woman dies after acid attack at Mumbai train station