A football fan is fighting for his life after being left in a critical condition during a brawl between 15 Blackpool and Burnley supporters.
The man, who is in his fifties, was found by police with a serious head injury near the Promenade in Blackpool.
The football fans had been at the Blackpool v Burnley match and officers were called following the breakout of the fight at around 7pm on Saturday, several hours after the end of the scoreless draw.
CPR was administered by paramedics before the man was taken to hospital and a 33-year-old man was arrested on suspicion of wounding.
Lancashire Police said there was no evidence that the victim had been specifically targeted.
The force told The Sun: 'The incident occurred at around 7pm, when an altercation broke out involving around 15 people outside The Manchester pub, at the junction of Lytham Road and the Promenade.
'An investigation has now been launched and we are working with both Blackpool and Burnley football clubs to establish who else was involved in the incident and what exactly occurred,' a police spokesperson said.
'Officers were in the area of the pub following the Blackpool v Burnley football match and they attended and found a man had suffered a serious head injury.
'They administered CPR and the man, aged in his 50s, was subsequently taken to hospital, where he remains.
'It is believed the altercation broke out between a number of football fans, with the man being injured as part of this incident.
'At this time there is no suggestion he was specifically targeted.
'An investigation has now been launched and we are working with both Blackpool and Burnley football clubs to establish who else was involved in the incident and what exactly occurred.
'We are also asking anybody with information about what happened to get in touch.'
Det Con Insp Tracey McMurdo added: 'We are taking this incident extremely seriously and will do everything in our power to identify anybody who may have been involved.
'This type of violence is simply not acceptable on the streets of Lancashire.'
The family of the injured man are being supported by specialist police officers.