A man arrested on suspicion of indecent assault is believed to be Neville Neville, the father of former England footballers Gary and Phil, ITV News understands.
Police said they arrested a 63-year-old man after reports of an incident in Bury in the early hours of Saturday.
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A 24-year-old man suffered a deep cut to his ear after another passenger leaned over and bit it during a row.
Wintry feel to end the week
Shivering with sliding temperatures