Police have questioned three teenagers on suspicion of assault after violent scenes on a bus in Leeds.
A police spokesman said officers were called shortly after 10pm on Wednesday to reports that a 33-year-old man had been assaulted in the street by a group of youths.
Three teenagers, aged between 14 and 16, were arrested on suspicion of assault and released on bail while enquiries continue.
It is understood the assault began place in Vicar Lane, near the Corn Exchange, before spilling onto a number 12 Leeds First service.
The fight reportedly continued on the bus, with a passer by intervening to help the driver bring the situation under control until police arrived.
It is unclear whether any passengers were on board at the time but there were no reports of injuries to the driver or passengers.
First Leeds managing director Paul Matthews said: "We are aware of the incident that took place on board one of our services earlier this week and we are thankful that nobody was harmed.
"These incidences are thankfully very rare, but regardless of this, we do not tolerate abuse on board our buses, whether that’s towards other customers or our own staff and we’d therefore urge anyone with further information to contact the police immediately.”