A friend of Tomas Ceidukas, who was fatally injured in the Studio 338 fire, battled to save him by putting out flames with his bare hands.
Tomas, 28, died in hospital on Tuesday after being badly injured when the blaze broke out at the Greenwich Peninsula superclub on Monday, August 8.
Tributes have been pouring in for the nightclub employee, with some reports suggesting he spent his final moments trying to save people from the inferno.
Max Maxi wrote on a Facebook page set up in memory of Lithuanian: “Just got back from the hospital after seeing my dear Friend , Brother, Son, Tomas on his bed.
“This is my hand burned trying to put the fire off from his body on the day of the incident, but unfortunately I still couldn’t save him! He left a deep hole in our hearts .
“We love you Tomas and you will always be in my family’s hearts and everyone love you deeply ! Rest in peace my angel ! XXXXXXXX”
Police, London Fire Brigade and the Health and Safety Executive continue to investigate the cause of the fire which ripped through the nightclub and several surrounding buildings.
In a statement police said: “A special post-mortem examination will be held at Greenwich Mortuary on Friday, August 12.
“Detectives from the Met’s Homicide and Major Crime Command are investigating with the Health and Safety Executive.
“It is not unusual in circumstances such as this for the HMCC to provide additional expertise and resources to support and progress the investigation.
“At this stage the investigation has yet to establish what caused the fire.”
Anyone with information is asked to call the police non-emergency line on 101 or Crimestoppers anonymously on 0800 555 111.