Police appeal after man dies in online Punch4Punch game
Police are treating the death of a 23-year-old man in south-east London as "unexplained" after he is said to have taken part in an online punching game.
Tommy Main was taken to hospital but died shortly afterwards.
Detectives arrived at a party in Erith after being alerted by an ambulance crew in the early hours of Sunday morning.
"I am especially interested in any images or footage from the night of his death," said DI Michael Norman.
"Tommy's death is being treated as unexplained but I would urge any of his friends who were at the party on the night of his death to make contact."
The post-mortem, carried out at Princess Royal Hospital in Bromley, was inconclusive and toxicology tests have been ordered.
The internet game Mr Main is thought to have been playing is called Punch4Punch.
It involves two people taking it in turns to hit each other, until one gives up. Sometimes alcohol is drunk as a penalty.
The fight is often videoed and then posted online.
Scotland Yard said a 20-year-old man, who has been arrested in connection with the investigation, has been bailed until September.
Mr Main's brother Roy posted on Facebook: "I had to say good by to my little brother today for the last time.
"I'm hurting so bad... I don't think I'll ever be the same again."
Mr Main's friend Matthew Davey has set up a Facebook fundraising page.
"The aim of this fundraiser is to raise as much as we can to help contribute towards funeral costs for the family and a brighter life for Aimee [Mr Main's daughter]," he wrote.
"We will also have a scrap book for anyone to write a note in or leave a picture so that Aimee has something to look at when she's older and knows what a loved guy her dad was."