Commonwealth Games Federation chief Michael Fennell said on Tuesday that the two positive doping tests of the Nigerian athletes could be related to use of supplements.
Nigerian Osayemi Oludamola was stripped of the women's 100 metres Commonwealth Games gold medal on Tuesday after her B sample confirmed a positive test for a banned stimulant, the Games Federation said.
Nigerian 110 metres hurdler Samuel Okon has tested positive for the banned stimulant methylhexaneamine, Games Federation chief Mike Fennell said on Tuesday.
Nigeria's Folashade Abugan has been stripped of her 400metres silver medal after failing a drug test at the Commonwealth Games.