Officers investigating a serious assault at Seaforth & Litherland station are today releasing this CCTV image in connection with the incident.
At 6.35pm on Sunday 6 March a man noticed another man behaving threateningly towards a teenage boy. He challenged him and the man became verbally abusive towards him.
The man then assaulted him, punching him in the face and neck and tackling him to the floor. He repeatedly punched him and put his hands around his neck. He then left the scene after another passenger intervened.
The victim attended hospital with head and neck injuries, and a broken nose.
Officers believe the man in the CCTV image may have information that could help their investigation.
If you recognise him or have any information, please contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 474 of 06/03/22.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.