Sports Minister Sarbananda Sonowal's revelations came just a few days after India has been placed at the third spot in worldwide dope violation in 2014 in a report published by World Anti-Doping Agency.
Chris Xuereb, the masseur and fitness advisor of Asafa Powell and Sherone Simpson, has denied providing the two Jamaican sprinters with performance-enhancing drugs and said they should take responsibility for their failed dope tests.
Shailaja Pujari is believed to have returned a positive test following random out-of-competition testing by WADA officials.
World 100 metres champion Justin Gatlin said on Tuesday he is "shocked and surprised" at doping allegations made against his coach Dennis Mitchell, like Gatlin a convicted doper, but added that he sacked him as soon as he heard about the issue.
The 23-year-old world champion crossed the line in the Ras al-Khaimah half marathon three seconds quicker than the mark set by fellow Kenyan Florence Kiplagat in Barcelona two years ago, although the new record remains subject to ratification.
With the ever increasing threat of corruption in the game, Richardson said the ICC's Anti-Corruption Unit (ACU) has gone on an overdrive to curb the menace.
Widely expected to clinch one last medal for India at the Rio Games, London Olympics bronze-medallist Yogeshwar Dutt is trying hard not to let the Narsingh Yadav episode affect him ahead of the men's 65kg freestyle event on Sunday. A day after an unassuming Sakshi Malik became the heartthrob of the nation by becoming the first Indian woman wrestler to win an Olympic medal when she opened India's tally with a bronze, doping cloud began to haunt the grapplers again as Narsingh was slapped with a four-year ban for testing positive for banned substance.
A summary of sports events and sports persons, who made news on Friday
Two players from each team will be tested as per WADA procedures during the October 7-November 5 tournament.
11-time Indian 100m champion Adille Sumariwalla says it was wrong to suspend athletes who went missing when WADA officials came calling.
Russian anti-doping officials have for the first time acknowledged a massive doping conspiracy in their country that has rocked world sport, the New York Times reported on Tuesday.
Cypriot weightlifter Antonis Martasidis and an unnamed Greek competitor have tested positive for banned substances and have been expelled from the Rio Olympics, their teams said on Friday.
Young Pakistan left-arm spinner Raza Hasan faces a possible two-year ban from all forms of cricket after testing positive for cocaine following a dope test carried out at the WADA-accredited laboratory in India.
The 29-year-old former French Open finalist failed the out-of-competition test in February after a urine sample was found to contain letrozole - a substance used in the treatment of breast cancer which is also on the banned drug list of the World Anti-Doping Agency (WADA).
The ITF said its independent Anti-Doping Tribunal ruled that 27-year-old Argentine tested positive for the banned stimulant etilefrine after his French Open final defeat by Spain's Rafael Nadal in June.
Despite not having enough evidence to prove the allegations of a sabotage, Narsingh Yadav put up a brave face sounding hopeful that the NADA panel will give a proper verdict on his doping scandal.
A summary of sports events and sports persons, who made news on Tuesday
A sweeping reform package that changes how the scandal-hit governing body of world athletics operates was overwhelmingly passed at a special Congress on Saturday.
The BCCI had been vehemently opposed to signing up with NADA, claiming that it is an autonomous body, not a National Sports Federation and does not rely on government funding.
Former India all-rounder Yusuf Pathan was on Tuesday handed a five-month retrospective suspension for failing a dope test, a sanction which will end on January 14, after the Board of Control for Cricket in India accepted that the violation was inadvertent.
Three senior athletics officials have had their provisional suspension from the sport extended by the IAAF's Ethics Board as it continues its investigation into their alleged involvement in a suspected cover-up of Russian doping cases.
European Athletics president Svein Arne Hansen does not expect Russia to return to international competition in time for next year's Olympic Games in Rio de Janeiro.
On a plea from the IOA, the ban on the three who tested positive at the Athens Games was cut to two years.
Bulgaria's weightlifters will be absent from next year's Olympics after the sport's governing body banned the country's athletes following a high number of doping cases, it said on Friday.
Summary of sports events and persons who made news on Thursday
The banned Indian lifter has written to IWF chief Tamas Ajan asking that she be allowed to present her case before the apex body.
Yogeshwar Dutt's London Olympics bronze medal will not be upgraded to gold after the United World Wrestling (UWW) on Tuesday made it clear that the top-place finisher in men's 60kg freestyle -- Togrul Asgarov - never tested positive for a banned substance. "Contrary to news reports, 2012 Olympic gold medalist Togrul ASGAROV (AZE) has never been in violation of UWW's anti-doping policy," the world body tweeted from its official Twitter handle.
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The stars tested negative after their urine samples were re-tested for the newly-discovered steroid THG.
Left red-faced by the four-year ban imposed on Narsingh Yadav by the Court of Arbitration (CAS), the Wrestling Federation of India has demanded a CBI probe into the doping scandal that has jeopardised the grappler's entire career.
Lopetegui blends youth and experience in Spain World Cup squad
A lengthy ban for doping would be devastating for five-times grand slam champion Maria Sharapova but she would survive it, Nick Bollettieri, the man who discovered her, said on Tuesday.
Maria Sharapova has admitted that she failed a drug test at the Australian Open this year. The Russian star has confessed that she tested positive for Mildronate/Meldonium, a medicine she has been taking for 10 years owing to health issues, and the same is included in the fresh list of banned substances.
"The thought of somebody's livelihood, career or legacy to be ripped to shreds for an accident is a terrible thought," said the American.
In villages in Palghar district -- in Mumbai's backyard -- more than 254 children have died from malnutrition.
'The suspicion of doping will hang over numerous men and women players including the elite stars,' says Desh Gaurav Chopra Sekhri.