GLASGOW, Scotland – A runner from Botswana has become the second Commonwealth Games athlete to fail a doping test in Glasgow.

Games officials say Amantle Montsho tested positive for the banned stimulant methylhexaneamine after coming fourth in the women's 400-metre final on Tuesday, and has been suspended.

Montsho attended a Commonwealth Games Federation hearing on Saturday and asked for her backup sample to be tested, which will happen on Monday in London.

The announcement came a day after 16-year-old weightlifter Chika Amalaha was stripped of her gold medal after a doping hearing.

The Nigerian tested positive for diuretics and masking agents after winning the 53-kilogram (117-pound) division last Friday, becoming the youngest female to win a weightlifting title at a Commonwealth Games. – Sapa-AP