Salwa Eid Naser, the world 400m champion of Bahrain, was provisionally suspended for whereabouts failures, a violation of anti-doping rules.
The Athletics Integrity Unit, which handles doping cases for track and field, did not announce further details about Naser’s sanction.
Under the World Anti-Doping Code, whereabouts failures are defined as “any combination of three missed tests and/or filing failures, as defined in the International Standard for Testing and Investigations, within a twelve-month period by an Athlete in a Registered Testing Pool.”
Filing failures can mean improperly filing out paperwork, or an absence of filling out paperwork, in notifying drug testers where an athlete will be to be made available for out-of-competition testing.