Kenyan Daniel Wanjiru, the winner of the 2017 London Marathon, has been provisionally suspended by the Athletics Integrity Unit.
The AIU noted on their official website on Tuesday that a charge had been issued against Wanjiru for “use of a prohibited substance/method”.
Under anti-doping rules, the 27-year-old cannot participate in any competition until a hearing has taken place into the allegation.
Wanjiru won the 2016 Amsterdam Marathon and has finished eighth and 11th in the past two London marathons.
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