The Athletics Integrity Unit (AIU) has banned Nigerian sprinter, Divine Oduduru, for six years over two doping violations.
AIU announced the decision on Thursday saying there was “overwhelming evidence” against him.
The violations were possession of prohibited substances and attempted use of a prohibited substance or method.
Oduduru’s case was linked to that of team-mate Blessing Okagbare, who was banned for 11 years for doping in 2022.
Meanwhile, Oduduru maintained his innocence throughout the investigation.
The 27-year-old, who has a 100m best time of 9.86 seconds, was disqualified in the 100m heats in Tokyo but reached the 200m semi-finals.
He won 200m silver at the 2014 World Junior Athletics Championships.