Football fans could hold vital clues to a nasty attack in a railway station.
British Transport Police say a group of Preston North End supporters had been arguing with a Manchester City fan who was later repeatedly kicked and punched.
Frightened passengers were caught up in the fracas on platforms 13 and 14 at Manchester Piccadilly at 8.10pm on Saturday, August 29.
The force has issued a new image of a man they want to speak to and a CCTV still of another man who they believe could also help with their enquiries.
The incident occurred.
Investigating officer PC David Cawley said: “This violence took place on a busy platform on a Saturday night causing fear, alarm and distress to fellow passengers who were waiting for their train and were caught up in the frightening incident.
It is understood the offenders boarded a Trans Pennine Express service to Preston which left at around 8.30pm, having been delayed due to the incident.
Two men, aged 19 and 26, from Preston have already been interviewed and are to be summonsed to court for an offence of affray.
Anyone with information can call 0800 40 50 40 or Crimestoppers on 0800 555111.