A group of Kenyan athletes have occupied the headquarters of the sport's national governing body, stopping officials from entering.

They want Athletics Kenya (AK) officials to step down over corruption allegations linked to a deal with Nike, the BBC's Anne Soy reports.

AK Vice-President David Okeyo has denied the allegations.

The athletes also blame the administrators for failing to deal with doping in the sport.

Kenya is one of the world's top athletics nations and topped the medals table at August's athletics world championships in Beijing.

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