Naser probed prior to winning world title

Women's 400m world champion Salwa Eid Naser faces a two-year ban for 'whereabouts failures'

Bahrain's world 400metres champion Salwa Eid Naser was under investigation for anti-doping violations relating to whereabouts failures when she won the title at last year's championships in Qatar.

The Athletics Integrity Unit (AIU) said on Sunday that the 22-year-old Nigerian-born Naser was provisionally suspended after a fourth whereabouts failure in January this year and the conclusion of the investigation.

Naser could face a two-year ban which would rule her out of the Tokyo 2020 Olympics which have been postponed until 2021 due to the coronavirus outbreak.

The AIU did not give reasons for the delay in issuing a provisional suspension.

Naser said on social media that missing three tests in a year, which counts as a doping violation, was "normal" and that she was not a drug cheat.

Naser beat Olympic champion Shaunae Miller-Uibo to win the Doha worlds gold in 48.14 seconds, the third-best time over the distance.

Her time was just 0.54 seconds off the 35-year-old world record from East German Marita Koch with Czechoslovakia's Jarmila Kratochvilova, in 1983, the only other to have run faster.