Police Scotland say the "targeted attack'' happened at the man's home in Uddingston.
Man Battered In Fife Train Attacks
A man has been pulled from a train before being punched and kicked in two attacks in Fife.
It happened on the 23.08 Edinburgh Waverley to Dundee service on Saturday night.
He was pulled from the train at Aberdour or Burntisland station and punched and kicked by the other man. He got back on and travelled to Kirkcaldy where he alighted from the train, just before midnight, where he was assaulted for a second time by being punched by the same man.
He was taken to Kirkcaldy Hospital where he was treated for serious injuries to his mouth, face, body and wrist and later released.
It is believed the man responsible for the attack boarded the train at Haymarket station in Edinburgh. He is described as being of medium build, with light brown hair and was wearing a light blue jacket, an orange top and jeans.
Officers are reviewing CCTV footage from on the train and at the stations in an effort to identify the suspect.
Meanwhile Detective Constable Paul Farquhar, the BTP officer in charge of the enquiry is appealing for witnesses to come forward. He said:
“This violent and unnecessary assault has left the victim seriously injured and facing weeks of recuperation. CCTV footage shows that the train and Kirkcaldy station were busy at the time and I’m anxious to trace anyone who was at any of the stations or on the train itself and has information which can help identify the man responsible to get in touch as soon as possible.
“We have been told that the assault may have been recorded by other passengers. So, if anyone has mobile phone footage which can assist our enquiries they are urged to contact BTP.”
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