Kiptum out of London Marathon after biological passport ban

Paris - Kenya's Abraham Kiptum, the world record holder in the half-marathon, was ruled out of the London Marathon on Friday after being provisionally suspended over irregularities in his biological passport, the Athletics Integrity Unit (AIU) announced.

"The AIU confirms a provisional suspension against Kenyan long-distance runner Abraham Kiptum for an Athlete Biological Passport violation under the International Association of Athletics Federations (IAAF) anti-doping rules," tweeted the AIU.

Kiptum, 29, set a new world half-marathon record in Valencia last October with a time of 58:18.

He has a personal best time in the marathon of 2:05:6, achieved when he won in Amsterdam in 2017.