-- Torri Edwards, who finished second in the 100 meters at the U.S. Olympic trials on Saturday night, tested positive for a stimulant at a recent meet, according to two sources familiar with the test result.

Edwards, who qualified for her second Olympic team with the victory, could be banned from the Olympics if the positive test of her "A" sample is confirmed by a testing of her "B" sample. When athletes submit to drug tests, their samples are divided into two for their protection.

Edwards, 27, tested positive for nikethamide -- a central nervous system stimulant formerly used in the treatment of barbiturate overdose -- at a meet in Europe this season, the Chicago Tribune reported on its Web site Wednesday night. The Tribune reported that the world governing body of track and field (IAAF) administered the test.

Edwards, who won a relay bronze medal at the 2000 Summer Games, is entered in this weekend's 200 at Alex G. Spanos Sports Complex, and will be eligible to compete in the event.

USA Track and Field spokesman Jill Geer said USATF had not been notified of any positive tests and thus could not comment on eligibility.

Edwards and her agent, Emanuel Hudson, could not be reached to comment. U.S. Anti-Doping Agency CEO Terry Madden and Director of Legal Affairs Travis T. Tygart declined to comment.

Edwards is expected to make a statement on Thursday and provide an explanation for the positive test result.

Edwards faces as much as a two-year ban under the new World Anti-Doping Code unless she can prove she consumed the substance inadvertently. Then, she would face a lesser punishment, ranging from a public warning to a one-year ban.

Edwards finished second to LaTasha Colander in Saturday's final. University of Miami star Lauryn Williams finished third and Olympic veteran Gail Devers was fourth.

It is notable that Edwards's biggest achievements to date were tainted by somebody else's drug positive: Edwards earned her first world championship gold and silver medals last year after Kelli White, another U.S. sprinter, tested positive for the stimulant modafinil. Edwards, who finished second to White in the 100 and third in the 200, complained during a news conference in May in New York that she felt cheated of her rightful victory celebration by White.

Edwards also said last week that she had not yet received her world gold and silver medals.

Edwards trains in Los Angeles with the well-known sprint team known as HSI. The group includes the men's national champion in the 100, Maurice Greene, along with a host of other elite athletes, including Lake Braddock High's Allen Johnson, Inger Miller, Jon Drummond, Ato Boldon of Trinidad and Tobago and Larry Wade.

Sprinter Torri Edwards, a bronze medal winner in the 2000 Games in Sydney, could be banned from next month's Olympics in Athens.