Nigeria women's 4x400 metres relay team have lost their place at the 2016 Olympic Games in Brazil after a member of their team, Tosin Adeloye tested positive for a banned substance.
Nigeria's 400m runner, Adeloye has been banned for eight-years following the the second positive drugs test of her career.
Adeloye served a two-year ban after failing a test for an anabolic steroid metenolone in 2012, only to fail another test last year when competing at the Confederation of African Athletics (CAA) Super Grand Prix/Warri Relays.
She has been stripped of all results achieved in the last year and is also suspended from competing at the Olympics.
Adeloye was a member of the Nigerian team that finished fourth at last year's International Association of Athletics Federations (IAAF) World Championships, meaning the team will be disqualified and no longer have a qualifying time for Rio 2016.
This has been confirmed by the IAAF, who said that Cuba have been called up to replace the African nation in the 4x400m relay.
While Patience Okon-George, Margaret Bamgbose and Omolara Omotosho will still compete for Nigeria in the individual 400m, Regina George will no longer be able to compete as she had only been selected for the relay event.
This is especially sad as George had successfully raised money to finance her qualification bid through the crowd-funding platform Gofundme.