London, Aug. 7(ANI): After being expelled from the London Olympics, American judoka Nick Delpopolo has admitted to unintentionally consuming marijuana before arriving in the city.

Delpopolo is the first of the 10,500 games athletes to fail an in-competition doping test, and in total, his case is the fifth positive test for a banned substance reported by the International Olympic Committee (IOC) since its official London Games testing period began in mid-July.

The IOC said it disqualified Delpopolo from the men's 73-kilogram class, where he was placed seventh.

Delpopolo tested positive for metabolites of cannabis after competing on July 30, and he apologized to the United States team in a statement acknowledging he was 'embarrassed by this mistake.'

My positive test was caused by my inadvertent consumption of food that I did not realize had been baked with marijuana, before I left for the Olympic Games, Fox news quoted Delpopolo, as saying in a statement released by the US Olympic Committee (USOC)

I look forward to representing my country in the future, and will rededicate myself to being the best judo athlete that I can be, he added.

Delpopolo shall have his Olympic identity and accreditation card canceled and withdrawn immediately, the IOC said.

USOC spokesman Patrick Sandusky said the team was 'absolutely committed to clean competition' and supported Delpopolo's disqualification.

Any positive test, for any banned substance, comes with the appropriate consequences, Sandusky said. (ANI)