Saudi authorities say sprinter Yousef Ahmed Masrahi will not compete in this summer's Olympics after failing a drug test.

Masrahi set an Asian 400-meter record at the athletics world championships in Beijing last year.

The Saudi Olympic Committee said in a statement that the 28-year-old athlete tested positive for a banned substance during training in June, and that as a result he will not compete at next month's Olympics in Rio de Janeiro.

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