Two OL-guldvindere in vægtløft have tested positive for use of banned substances.
It enlightens the international vægtløfterforbund (IWF) according to the news agency NTB.
Oleksij Torokhtij from Ukraine and Ruslan Nurudinov from Uzbekistan is among the five weightlifters have been tested positive after the new urine tests.
It is not informed, what are the banned substances.
As the Torokhtij won gold in London in 2012, was the victory referred to as shocking. Not because of fears about cheating, but because no one weightlifter had previously won the class with a lower number of pounds than his.
Nurudinov has since his win in Rio in 2016 to continue its high level. By november, he won the bronze in WORLD cup shock in the 109-kilogram class.
The other three that have tested positive, are Valentin Hristov from Azerbaijan, Makalaj Novikau of Belarus and Meline Dalusjan from Armenia.
Hristov won the bronze medal in the 56-kilogram class in London in 2012. At the same competition was Novikau an eighth place, while Dalusjan was number 15 in the women's 56-kilo class.
In 2016, it emerged that three female weightlifters from Kazakhstan had been revealed in the dopingsnyd. They were all stripped of the gold medals they won at the OLYMPICS in London in 2012.
five eastern european athletes were disqualified from the games because of positive drug testing. All eight tested positive for turinabol or stanozolo - two different anabolic steroids.
An independent report from The International Anti-Doping Agency's (Wada) independent unit showed in 2016, there was "no or few blood tests in competition at the højrisikosportsgrene" during the OLYMPICS in Rio the same year.
Among other things, many weightlifters not tested. This was mainly due to logistical challenges, problems with the staff or lack of resources.
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