Muhammad Ali has been banned by the international amateur boxing association from all international and domestic competitions.

Team Great Britain (GB) boxer Muhammad Ali has been provisionally suspended from all international and domestic competitions after testing positive for a banned steroid, the international amateur boxing association (AIBA) says.

Ali tested positive during a World Series Boxing match between Morocco Atlas Lions and British Lionhearts in Casablanca in April.

AIBA said on its website on Thursday it would not make any further comment on the matter until its anti-doping panel had heard the 21-year-old’s case.

GB Boxing said that a member of its squad had tested positive for a banned substance, although it did not name Ali.

“This is the first time that a member of the GB Boxing squad has tested positive for a banned substance,” the British boxing organisation said in a statement.

“GB Boxing is committed to clean sport.

“We work in partnership with UK Anti-Doping (UKAD) and our International Federation to provide extensive education and support to our boxers on anti-doping rules, the anti-doping obligations upon them as athletes and the importance of adhering to the principles of clean sport.”

Ali, a silver medalist at the 2014 World Youth Championships and 2016 European Championships, lost his first round of the flyweight competition at last year’s Rio Olympics in Brazil.

-Reuters