Adelaide, Australia  - Australian former cycling world champion Jobie Dajka has been found dead in his home in Adelaide, the TV channel Nine Network said Tuesday.

A cause of death was not given.

The 27-year-old, who won the keirin world championship in 2002 and a year later won the silver medal, had a troubled history since being thrown off the Australian Olympic team in 2004 for lying during an investigation into drug use.

He was later given a suspended prison sentence for assaulting the Australian cycling coach Martin Barras. He was also suspended for three years by Australian cycling officials.

Dajka then admitted to be suffering from depression and having alcohol problems. (dpa)