Melbourne: Pop singer committed suicide fearing that he had crippled a fan during a stage-dive, it has emerged.
Haddon, lead singer of British band Ou Est Le Swimming Pool, jumped off a satellite mast after a performance at the Pukkelpop festival in Belgium.
A young girl was seriously injured after the singer suddenly dived into the audience during the band’s performance.
Haddon, 22, reportedly feared he may have crippled the girl for life and was heard saying: "I hope she pulls through. I hope she will be able to walk."
Investigators are now reviewing video of Haddon emerging from backstage after the gig following the incident they say sparked a "near riot".
Witness Jens Borms said the stage-dive caught people off-guard.
"As people were completely surprised by this, they jumped away instead of catching him. Apparently one girl couldn`t get away and was severely injured in the back," News.com.au quoted Borms as saying.
Another eyewitness said: "I`m sure he didn`t mean to hurt anyone. The look in his eyes when he stood up and they pulled the girl from the ground was very scary."
According to Belgian newspaper De Standaard, Haddon then had a "furious argument" with his fellow band members.
Hours later, his body was found in the carpark below the mast.
The injured girl is in hospital with serious injuries to one leg and four vertebrae but is expected to make a full recovery.