Brazilian Kleber Da Silva Ramos failed a test for EPO CERA in an out-of-competition anti-doping control in the week before he took part in the Rio 2016 Olympic Games road race.

The Union Cycliste Internationale (UCI) confirmed on Friday that Ramos had been provisionally suspended as a result of the positive test, which was taken on July 31.

“The UCI announces that, in accordance with its Anti-Doping Rules (UCI ADR), Brazilian rider Kleber Da Silva Ramos has been provisionally suspended following an Adverse Analytical Finding (AAF) of CERA found in a sample collected by the International Olympic Committee (IOC) during an out-of-competition control on 31 July 2016.”

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The 30-year-old rode in the men’s road race on the opening day of the 2016 Games, but did not finish. The positive test will come as an embarrassment to the host nation.

Ramos is currently signed by the Brazilian Professional Continental-level Funvic Brasilinvest-São José dos Campos team. He won a stage of the Tour de San Luis in 2015.

Three positive doping tests were announced by the Court of Arbitration for Sport on Friday from samples taking during the Rio Games, none from cyclists: a Bulgarian runner, Chinese swimmer and Polish weightlifter.