What was supposed to be an injection for a chiropractic treatment turned out to be drug induced for South Korea’s first Olympic swimming Champion Park Tae Hwan who will face a hearing for failing a doping test.

The International swimming body, FINA administered the test and found the 25 year-old had used a yet to be mentioned performance enhancement drugs.

His agency say that the substance was contained in an injection given him at a South Korean hospital where he went to for treatment.

Nicknamed Marine Boy, Park Hwan won gold in the 400m freestyle and silver in the 200m freestyle at the Beijing 2008 Olympics. He won silver in those events at London 2012 and he has an aquatic arena named after him.

'As a world class swimmer, Park Tae-hwan has been extremely careful about what he takes, and he hasn't even taken cold medicine so that he wouldn't fail doping tests... Park is more shocked by this result than anyone else,'  his agency Team GMP said.

They plan to old the hospital 'civilly and criminally liable' .