World champion Fury admits cocaine use, wants 'someone to kill me'

London : Troubled world heavyweight champion Tyson Fury has admitted taking cocaine, saying "I hope someone kills me before I kill myself," in an interview with Rolling Stone magazine published Tuesday.

Fury's latest remarks came after the 28-year-old made an abrupt U-turn on his retirement decision on Monday, tweeting: "I'm here to stay."

The British fighter recently cancelled an October bout with Wladimir Klitschko to defend his World Boxing Association and World Boxing Organization heavyweight belts. 

Fury had been scheduled to earn the biggest purse of his career in a rematch with Klitschko at the Manchester Arena after shocking the Ukrainian last November to become world champion. 

However, Fury withdrew from that date as his camp claimed he had been "declared mentally unfit to fight". In another tweet on Monday, Fury said he was "getting the right help" and would "be back even stronger than before".

ESPN reported Fury tested positive after providing a urine sample to the Las Vegas-based Voluntary Anti-Doping Association (VADA) in Lancaster, England on September 22. Cocaine, while an illegal drug, is not banned in boxing if taken out of competition.

Fury's camp made no comment on the reports of cocaine use but the boxer himself confirmed them in an interview that Rolling Stone said was conducted on Monday, before the champion's retirement U-turn.

"Listen, I've done a lot of things in my life. I've done lots of cocaine. Lots of it," Fury told Rolling Stone.

"Why shouldn't I take cocaine? It's my life, isn't it? I can do what I want. Yeah, I have done cocaine. Plenty of people have done cocaine as well."

Fury, explaining why his re-match with Klitschko had been called off for a second time, said: "I've not been in a gym for months.

"I've not been training. I've been going through depression. I just don't want to live any more, if you know what I'm saying. I've had total enough of it.