2016 Rio Olympics: Brazil's world record holder tests positive

New Delhi: One of Brazil's medal hope at the 2016 Rio de Janeiro Olympics, world record holder Etiene Medeiros has tested positive for a banned substance.

The Brazilian anti-doping authority (ABCD) confirmed on Thursday that the 25-year-old swimmer tested positive for traces of fenoterol — a drug used to treat asthma — in an out-of-competition test in Sao Paulo on May 8.

Both her A and B samples tested positive. And ABCD said they had forwarded all the details to the Brazilian Swimming Federation for them

Medeiros, considered as Brazil's greatest woman swimmer, burst into the limelight in 2014, winning the short course world title in the 50m backstroke in Doha in a world record time.

She won silver in the 50m backstroke at last year`s world championships in Kazan, and was the first Brazilian woman to win swimming gold at a Pan American Games with her 100m backstroke gold in Toronto in 2015.