A group of vandals caused havoc when they attempted to board a train then spray painted the side of the carriage.
A group of up to 20 young people attempted to board the 5.14am Bristol Temple Meads to Severn Beach service on Monday, but were too late.
Several members tried to stop the train doors from closing and were then verbally abusive to staff who attempted to reason with them.
Other individuals then spray painted the side of the carriage - covering the windows and panels in silver and pink paint.
The service was cancelled, and all passengers were asked to alight from the train.
Police have issued an appeal for witnesses after a crash on the A403 Severn Rd, between Pilning and Northwick.A car initially collided with a white lorry tractor unit before other vehicles became involved.A woman in her 40's was taken to Frenchay Hospital with life threatening injuries
Police say they're keen to trace the driver of the white Tractor Unit which was initially struck by the car, who had left the scene before the arrival of the Police.