Friday 7 April 2017 00:08, UK
Olympic marathon champion Jemima Sumgong has tested positive for banned substance Erythropoietin (EPO).
Sumgong, who became the first Kenyan woman to win Olympic gold in the marathon when she came home first in Rio de Janeiro, failed an out-of-competition test.
A statement from the IAAF said "The athlete tested positive for EPO (Erythropoietin) following a no-notice test conducted by the IAAF in Kenya.
"This was part of an enhanced IAAF out-of-competition testing programme dedicated to elite marathon runners which is supported by the Abbott World Marathon Majors group."
