Kenyan runner Abraham Kiptum has been suspended just two-days ahead of his scheduled run in the London Marathon.
The 29-year old has received a provisional ban from the Athletics Integrity Unit for for an Athlete Biological Passport (ABP) violation.
Kiptum broke the half-marathon world record in Valencia in October, running a time of 58:18. In December, he ran a time of 2:04:16 in placing 2nd in the Abu Dhabi Marathon.
He ran the fastest half marathon in history 🔥🔥
5km - 13:56
10km - 28:02 (14:06)
15km - 41:37 (13:35)
20km - 55:18 (13:41)
21km - 58:18 (3:00)
Now Abraham Kiptum is taking on the Virgin Money London Marathon...#LondonMarathon #ThanksaBillion pic.twitter.com/HbMcBjHB6e— TCS London Marathon (@LondonMarathon) April 2, 2019
It's a further blow to London Marathon organisers following the unseemly row this week between Mo Farah and Haile Gebrselassie.
Download the brand new OffTheBall App in the Play Store & App Store right now! We've got you covered!
Subscribe to OffTheBall's YouTube channel for more videos, like us on Facebook or follow us on Twitter for the latest sporting news and content.