A 14-year-old boy has admitted killing a Blackpool man with a single punch.
The teenager, who cannot be named for legal reasons, will be sentenced next month after pleading guilty to the manslaughter of Paul Walker, 52.
Preston Crown Court heard the shocking attack was filmed but the footage has never been recovered.
Celtic fan Mr Walker, of Normoss Avenue, left a party on Kent Road in good spirits shortly after 1am on New Year’s Day.
He then set off for his Grange Park home.
But he was later found unconscious in Sutton Place at around 2am.
His violent actions had devastating consequences
He was taken to Blackpool Victoria Hospital where he later died.
A post mortem examination showed the cause of death was head, face and neck injuries.
Julie Taylor, defending, said video footage of the incident could help corroborate the boy’s version of events.
She added: “Part of the mitigation on behalf of the youth is that there was encouragement from two older young men to punch the deceased on the night.
“The police can confirm there was a video, but they have been unable to retrieve it. It has been deleted from a telephone.”
She said police were trying to trace the footage, which is thought to have been shared, possibly using social media.
David Clarke, prosecuting, said a number of witnesses all simply spoke of a “friendly encounter” with Mr Walker.
He told the court the defendant followed Mr Walker and “unexpectedly” threw a punch which was filmed on a mobile phone.
The boy was remanded to local authority accommodation until he appears for sentencing on April 10.
Judge Anthony Russell told him: “You have now pleaded guilty to a serious offence.
“You should be under no illusions that for an offence of manslaughter the first type of sentence the court considers is a custodial sentence, notwithstanding your age.”
Det Chief Insp Pete Simm, of Lancashire Police’s Force Major Investigation Team, said after the hearing: “This is a tragic case which sadly cost Mr Walker his life.
“The violent actions of this young boy have left devastating consequences for Mr Walker’s family and friends.
“I hope that this guilty plea, which has at least spared family and friends the ordeal of having to sit through a trial, brings them some degree of closure.
“My thoughts remain with them at this difficult time.”