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
— Virgin Money 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.