NEW DELHI -- Osayomi Oludamola was stripped of her 100-meter Commonwealth Games gold medal Tuesday, the same day organizers announced that a second Nigerian runner had tested positive for the same banned stimulant.
The Commonwealth Games Federation said Oludamola's "B" sample had confirmed a positive finding for the stimulant Methylhexaneamine.
"With the 'B' sample confirming the results of the 'A' sample, the Federation Court determined that Ms. Oludamola had committed an anti-doping rule violation and that she be disqualified from the games and all her competition results at the 2010 Commonwealth Games be nullified," the federation said in a statement.
Natasha Mayers of St. Vincent and the Grenadines will be moved up to gold, Katherine Endacott of England will get silver and Bertille Delphine Atangana of Cameroon will be awarded bronze.
The 100 started with false starts by Laura Turner of England and Sally Pearson of Australia. Pearson crossed first before being disqualified hours later.
Endacott originally finished out of the medals in fourth place.
Also, Samuel Okon, a finalist in the men's 110-meter hurdles, was suspended after a waiving his right to have his "B" sample tested. He was also disqualified from the games and his results were nullified, the federation said.
Commonwealth Games Federation president Mike Fennell said Tuesday that Okon, who was sixth in the 110 hurdles final last Friday, also had tested positive for Methylhexaneamine.
"It's a stimulant," Fennell said of the drug, which also has been found in samples from about a dozen Indian athletes in recent months. "At this stage, I cannot speak very definitively as to where it's coming from, but it appears to us that it may be coming from the use of supplements."
Fennell said the Nigerian team was investigating the two positives.
"We have already had discussions with the leadership of the Nigerian team, who are themselves very, very concerned about this matter. We are satisfied that they are taking this very seriously," Fennell said. "They are very concerned about this and they are doing their own investigations."
The World Anti-Doping Agency recently loosened the classification of Methylhexaneamine for next year to the "specified stimulant" list, which covers drugs that are more susceptible to inadvertent use and can carry reduced penalties. Sanctions for use of the drug can be reduced if athletes can prove they did not intend to enhance performance. Penalties can range from a warning to a two-year ban.
WADA said Methylhexaneamine was sold as a medicine until the early 1970s and has reappeared in some nutritional supplements and cooking oils.
"We ourselves are concerned by the number of incidents that have cropped up with this same substance," said Fennell, noting that the change to the WADA list does not go into effect until next year.
"Each year on the first of January, it becomes effective a new list. We are operating on the 2010 list," Fennell said. "Whatever changes were made this year will be effective next year, but we are operating under the 2010 list."