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			 Russian wrestlers may now join the country's track-and-field 
			athletes in being barred from competing at the Games in August, 
			after an internal Russian Wrestling Federation (WFR) investigation 
			uncovered multiple doping cases, WFR President Mikhail Mamiashvili 
			said. 
			 
			The disclosure came a day after four Russian athletes were exposed 
			as having tested positive for the banned drug meldonium, further 
			damaging Moscow's efforts to overturn a doping suspension in time 
			for the Olympics starting in Rio de Janeiro on Aug. 5. 
			 
			Russian President Vladimir Putin said on Tuesday his sports 
			minister, Vitaly Mutko, would remain in his position despite the 
			scandal. Mutko later said, however, that he was prepared to end his 
			eight years in the job if asked to do so. 
			 
			"The country has a leadership who take these decisions. When I see 
			that the matter concerns me, I will leave my post," R-Sport news 
			agency quoted him as saying. 
			 
			Russian sport was thrown into turmoil last year when a report by the 
			World Anti-Doping Agency (WADA) exposed endemic cheating and 
			corruption in Russian athletics. 
			
			  Russian athletes have been suspended from international competition 
			and will miss the Olympics if the country cannot get the ban 
			overturned -- a humiliating blow to the pride and prestige of a 
			sporting superpower. 
			 
			Since then, at least 18 Russian sportsmen and women have tested 
			positive for meldonium, complicating Russia's drive to prove itself 
			compliant with international anti-doping standards. 
			 
			Mamiashvili said two male wrestlers, 2014 world championship silver 
			medalist Evgeny Saleev and 2015 World Cup silver medalist Sergei 
			Semenov, had been caught using meldonium. But he said the sport's 
			doping problem was widespread. 
			 
			
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			"There are tens of positive tests in the team, everyone is in a bad 
			condition psychologically," Mamiashvili told R-Sport. 
			 
			No female Russia wrestlers have tested positive for meldonium, 
			R-Sport reported. The WFR declined to comment. 
			 
			Talking to the state-owned TASS news agency about his team's chances 
			of competing at the Rio Games, Mamiashvili said: "It may happen that 
			simply none of us go." 
			 
			Meldonium, which is used to treat diabetes and low magnesium levels, 
			was banned by WADA on Jan. 1 after being linked to increased 
			sporting performance. 
			 
			It is particularly popular in Russia and the former Soviet Union, 
			having been invented in Latvia and used to help Soviet soldiers 
			fight at high altitude in the 1980s. 
			 
			R-Sport reported on Monday that around 40 Russian athletes from more 
			than 10 different sports had tested positive for meldonium in the 
			first two months of 2016. 
			 
			(Additional reporting by Maria Kiselyova, Dmitry Rogovitsky and 
			Darya Korsunskaya; Editing by Ed Osmond) 
			
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