Three Sheffield men have been arrested over a brawl between rival football fans on a train.
The men, one aged 50 and two aged 51, have been quizzed over a fight between Sheffield Wednesday and Chesterfield fans on a train in Leicester after both sets of supporters had watched their teams playing away games.
British Transport Police said the three men have been bailed until May.
Officers have also identified a fourth man they plan to quiz.
Seven Chesterfield supporters had already been arrested in connection with the disorder.