(Reuters) - Kenya's Sarah Chepchirchir has been hit with an eight-year ban after the former Tokyo Marathon winner was found to have violated anti-doping regulations for a second time, the Athletics Integrity Unit (AIU) said in a statement on Tuesday.
Chepchirchir had returned an adverse analytical finding for testosterone, the AIU said. The sample was collected at the Bangsaen42 Chonburi Marathon in Thailand in November.
