According to IAAF, the Nigerian team was banned because one of them, Tosin Adeloye, tested positive to drugs during the Confederation of African Athletics (CAA) Super Grand Prix/Warri Relays in Warri, Delta State on July 24th last year.
Adeloye's positive drug test and subsequent ban for eight years means all the results she achieved from the period she tested positive, individually and jointly will be disregarded. The Nigerian team can no longer forward a new replacement.



