Commonwealth Games women's 100m gold medal winner Damola Osayemi has failed a drugs test.
Commonwealth Games Federation president Mike Fennell said Osayemi had asked for her B sample to be tested and a hearing would be held later on Monday.
The Nigerian, 24, was named champion on Thursday after Australia's Sally Pearson was controversially disqualified for a false start.
It is the first negative test of the Games in Delhi.
The sprinter showed traces of a banned substance called methylhexaneamine, which has only recently been added to the World Anti-Doping Agency's prohibited list.
Games chief confirms failed drugs test
If the test is confirmed, England's Katherine Endacott, who finished fourth in the race behind Pearson and the Nigerian but was later awarded the bronze medal, would be elevated to a silver.
At the moment no decision has been made on the medals, pending the hearing.
The current silver medallist is Natasha Mayers of St Vincent and the Grenadines. If she were promoted that would be the country's second ever Commonwealth gold medal.
Punishment can range from a warning to a two-year ban, although the medal would be forfeited if the B sample proves positive.
At his daily news conference, Fennell said: "Any positive test - whether in a high-profile event or not - is something that is very much regretted because we all strive for a clean Games, clean sport and clean competition.
"One doesn't know what sort of damage will accrue but we want to let everyone know we are very vigilant and the testing is of the highest standard."
Explaining why the news had been confirmed now, rather than waiting for the B sample, Fennell added: "We recognise there is difficulty in maintaining complete secrecy during the process."
Lalit Bhanot, the organising committee's general secretary, said: "We want a dope-free Games. If somebody is caught, action will be taken. At the same time it is a message that no-one can escape."
Methylhexaneamine is the same drug the Indian weightlifter Sanamacha Chanu and swimmers Richa Mishra and Jyotsana Pansare were found to have used in September.
Wada subsequently moved it to the non-specified list, meaning it can be used with a therapeutic use exception certificate.
The Indians subsequently appealed against their bans but there has been no verdict yet.
According to companies that market products that contain methylhexaneamine, the drug stimulates the central nervous system.
It gives the body an energy boost by increasing the body's metabolic rate.
Nigeria's Athletics Federation president, Solomon Ogba, has reportedly claimed Osayemi was given prescription medicine to fight a nagging toothache.
"She took medication for her toothache and we strongly suspect that it was that, which led to her failed drug test," he said.
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Posted: at 11-10-2010 12:32 PM (14 years ago) | Addicted Hero
marysmile at 11-10-2010 01:12 PM (14 years ago) (m)
sorry baby!
Posted: at 11-10-2010 01:12 PM (14 years ago) | Newbie
ksurrina at 12-10-2010 12:41 AM (14 years ago) (f)
If the B Sample comes back then she will be banned and I don't believe that it will be more than for 6 months. It is the same thing that as happen to the sprinter here in Jamaica Shellyann. Athletes will never ever follow the mistakes of others before them. If she had place it that she took the pill then it would already declare and now there wouldn't be a case. No matter what we do we should always do it in honesty so that disgrace will not come upon us and our countries.
It is sad that Nigeria is in the NEWS again in a bad light. Very grievous to the heart!
Godly WISDOM is to Fear God. His UNDERSTANDING is to resist the devil.
Posted: at 12-10-2010 12:41 AM (14 years ago) | Gistmaniac
Wow! is quite a pity.i can understand very well that the problems with us,i mean our sports men and ladies is the inability to believe in their self. which is simply cursed by a result of fear.why drugs. no matter what for.keep to ur feet,pray to God and just go out there and digg it out. we africans has all it takes to do it when it comes to a thing that requires physical strength.yes is a natural gift from God to us. please lets stop hurting and bringing shame to our country......i pray that Damola will be set free with innocent prove.
Posted: at 12-10-2010 11:54 AM (14 years ago) | Newbie