A member of the United States' gold medal winning 4x400m squad has been banned for three years.
An email from the whereabouts system showed that the 21-year-old had given new information after missing three appointments.
Ross admitted to the AIU that he had altered the email.
His results from June onwards are void due to his ban.
The two-time American collegiate champion's medal from the Tokyo Olympics, as well as those of his team-mates, are unaffected by his whereabouts failures.
Athletes are honest in their dealings with the AIU during any investigation according to the AIU head.
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