The 21-year-old Ortega, sixth in the 110 metres hurdles at last year's Olympics in London, has been banned by the Cuban Athletics Federation after what has been described as "serious indiscipline" while he was competing in Europe. 

He would have been a serious contender for a medal in the Russian capital.

Ortega is currently ranked third in the world with a best time of 13.08sec.

But now Ortega, bronze medallist in the 2011 Pan American Games in Guadalajara, has been suspended for six months and will be confined to Havana to train, along with his coach Kelvis Antúnez. 

Last month Robles, the Beijing 2008 110m hurdles gold medallist and former world record holder, was banned from representing Cuba after it was claimed he had "a problem of discipline and sportsmanship".

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