Two Kenyan athletes have become the first to test positive for doping at this year's World Championships in Beijing.
The two female athletes that tested positive have been named as 400m runner Joyce Zakary and 400m hurdler Koki Manunga with both athletes accepting provisional suspensions following the results of the tests.
Manunga only managed to finish seventh in her heat but Zakary was significantly more impressive finishing second in hers with a national record of 50.71. The official IAAF report on the race summed up just how 'impressive' Zakary was in finishing runner-up to Jamaican Christine Day.
Zakary obliterated her previous national record mark by 0.43 and finished strongly down the home stretch to close to within 0.13 of Day to suggest she has more to come.
In a statement, the IAAF confirmed that the tests were 'conducted by the IAAF at the athlete hotels during the pre-competition phase on 19/20 August'.