American sprinter Deajah Stevens, who reached the 2016 Rio Olympics 200 metres final, has been provisionally suspended, the Athletics Integrity Unit (AIU) said on Friday.
Stevens was suspended because she failed to make herself available for anti-doping tests.
She cumulated three whereabouts violations over a 12-month period, the AIU said in a statement.
The 24-year-old won the U.S. 200m title a year after finishing seventh in the Olympics final.
Her 23-year-old compatriot Gabrielle Thomas, twice a 200m winner at the Lausanne Diamond League, was also provisionally suspended for three whereabouts violations, the AIU said.
Kenyan Alex Oliotiptip was also suspended for three whereabouts violations.
Oliotiptip took part in last year’s INEOS 1:59 challenge which saw compatriot Eliud Kipchoge became the first person to run a marathon in under two hours.
All three athletes could face a two-year ban.
Mikel Mutai of Kenya, who won the Hong Kong marathon in 2016, was provisionally suspended for failing a test for the banned substance norandrosterone, the AIU added
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