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KINGSTON, Jamaica -- Jamaican Olympic sprinter Sherone Simpson was banned from her sport until Dec. 20 after testing positive for a banned substance.
The Jamaica Anti-Doping Commission on Tuesday said Simpson was "negligent in all the circumstances." The 18-month ban began from the date of her sample collection on June 21, 2013.
The commission also banned Jamaican Olympic discus thrower Allison Randall for two years. She will not be able to compete until June 2015. Her ban also started June 21, 2013.
Simpson, an Olympic 4x100-relay gold and silver medalist, has said she was not a "cheat" and she never intentionally took the stimulant oxilofrone.
She blamed her new trainer for providing her with one of six supplements that led to a positive test. Simpson has said she researched the "Epiphany D1" supplement for up to 14 hours online before taking it, and nothing "raised a red flag or an alarm bell." The sprinter has acknowledged she did not disclose the new supplement on doping control forms.
Her trainer, Christopher Xuereb, has told The Associated Press that Simpson was looking for a scapegoat.
Attorney Kwame Gordon said Simpson was training in the U.S. and not able to fly back in time for the hearing.
Randall appeared on Skype during Tuesday's hearing and showed no reaction after the ruling.
She represented Jamaica during the 2012 Olympics and tested positive for a banned substance at June's national championships. She had testified that she believed the failed test stemmed from a supplement called "Animal Pak." The commission could not establish how the substance entered her body.
The three-member panel is expected to rule Thursday in the case of former 100-meter world record holder Asafa Powell. He also tested positive for oxilofrone at last year's Jamaican championships.