Women's marathon world record-holder Ruth Chepngetich was provisionally suspended for a positive doping test on Thursday. Track and field's Athletics Integrity Unit said Chepngetich tested positive for a banned diuretic and masking agent in March and "opted for a voluntary provisional suspension while the AIU's investigation was ongoing.

Ruth Chepngetich, the women's marathon world record holder, is provisionally suspended by the Athletics Integrity Unit (AIU) for a banned substance.

Women’s marathon world record-holder Ruth Chepngetich has been provisionally suspended after testing positive for a banned substance, the Athletics Integrity Unit (AIU) announced on Thursday.