Sectarian attack on teenage boy on Glasgow train
British Transport Police (BTP) are investigating an assault on a teenage boy who asked four men to stop singing sectarian songs on a train.
The 16-year-old was punched around the head and body shortly after the 16:42 Glasgow Central to Kilmarnock service departed on Saturday.
The suspects then got off the train at Barrhead and left the station in the direction of Carlibar Road.
The men, who are believed to be Celtic fans, are all aged in their mid-20s.
One of the men was wearing a grey striped football top with green sleeves.
A second man is described as being around 6ft, with blond hair.
A third man had short brown hair and was about 5ft 8in tall, with a heavy build and was wearing a green and white football top, black tracksuit trousers and training shoes.
A fourth man is described as being about 5ft 11in tall, with a thin build, short brown hair and was wearing a black jacket and navy trousers.
BTP said a bottle was thrown and smashed during the incident.
The teenager was taken by ambulance to the Royal Alexandra Hospital in Paisley and later released after treatment for cuts to his head and face.
CCTV footage from the train is being viewed in an bid to identify those involved.
Det Con Raymond Grimley, of BTP, said: "This was a violent and unsavoury incident leaving other passengers on the train shocked.
"Although we have very clear CCTV footage of those involved, I am urging anyone who was on the train or at the station and has knowledge of the identity of those suspected of the assault to contact BTP as a matter of urgency."