A man has handed himself in at a police station following an appeal over an attack which left a man with a broken nose.
British Transport Police had released CCTV images of five men they wanted to speak to in connection with the assault, which took place at about 1am on Thursday, 19 December.
A 21-year-old man from Grimsby attended a police station where he was arrested on suspicion of actual bodily harm.
Anyone with information is asked to contact British Transport Police on 0800 40 50 40 quoting background reference LNA/B5 of 24/12/2013. Information can also be passed to the independent charity Crimestoppers, anonymously, on 0800 555 111.