(CNN) Japanese short track speed skater Kei Saito has been suspended from the Winter Olympics after a positive doping test.

The Court of Arbitration for Sport (CAS) said Saito voluntarily accepted his provisional suspension after an out-of-competition test turned up signs of a masking agent

Saito had been due to compete Wednesday in the second heat of the Men's 5,000 Meter Relay, according to the official Games website.

Instead, the 21-year-old athlete will leave the Olympic Village Tuesday.

This is the first doping violation of the 2018 Pyeongchang Games. However, CAS pointed out that no results from the Games have been affected by the violation.

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