Botswana 400m runner Amantle Montsho tested positive for a banned stimulant at the Commonwealth Games and has been provisionally suspended.
Montsho, the 2011 World champion and 2013 World silver medalist, had an “A” sample contain methylhexaneamine. Her “B” sample is to be tested Monday, according to Commonwealth Games officials.
Montsho, 31, was fourth at the London 2012 Olympics and fourth in the Commonwealth Games final Tuesday. Her test came after the 400m final in Glasgow.
Three Sochi Winter Olympians tested positive for methylhexaneamine in February.
Several Jamaican track and field athletes tested positive for methylhexaneamine in 2009, including Olympic 100m and 200m silver medalist Yohan Blake, who received a three-month suspension.
Olympic discus champion Sandra Perkovic of Croatia tested positive for methylhexaneamine in 2011 and was given a six-month suspension.