Nigeria has banned eight athletes for doping, four of them gold medal winners and one a silver medalist at the All Africa Games last year.
Long jumpers Chinazom Amadi and Samson Idiata, weightlifter Elisabeth Onua and wrestler Patience Opuene were all banned following failed drug tests at the games in Brazzaville, Republic of Congo, in September, where they won gold.
Wrestling silver medalist Ebi James Igbadiwei was also banned.
The three other athletes, sprinter Deborah Odeyemi and para-athletes Sunday Ezeh and Thomas Kure, failed tests in Nigeria.
Seven of the athletes were given four-year bans. Weightlifter Onua, who tested positive for the diuretic Amiloride, received an eight-year ban after multiple violations.
Nigeria's National Anti-Doping Committee said the athletes' All Africa Games medals and winnings would be sent back to organizers.
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