KINGSTON (Jamaica) • Usain Bolt would have no problem giving back one of his six Olympic golds if a relay team-mate is confirmed to have failed a drug test.

Nesta Carter, who helped Jamaica's 4x100m team to Olympic and World Championships titles, returned a positive result for the banned stimulant methylhexanamine in a re-test of 454 samples from the 2008 Beijing Games. According to sources, his "B" sample has also come back positive.

"It's heartbreaking (the positive test) because over the years, you've worked hard to accumulate gold medals and to be a champion... but it's just one of those things," said Bolt, the world's top sprinter, on Saturday.

"Things happen in life, so when it's confirmed or whatever, if I need to give back my gold medal, I'd have to give it back. It's not a problem for me."

First-leg specialist Carter has been a vital member of Jamaica's dominant squad, helping the Caribbean island win golds at the 2008 and 2012 Olympics and the 2011, 2013 and 2015 World Championships.

Although his team-mates are not accused of doping, it is possible the International Olympic Committee could strip them of their golds after the positive test.

Bolt, speaking after completing his own doping control on Saturday after clocking a season-best 9.88sec in the 100m - the second-fastest time in the world this year behind Frenchman Jimmy Vicaut's 9.86sec - to take top spot at the Racers Grand Prix in Kingston, said they would just have to deal with the situation.

"I can't tell what he's (Carter) going through, but it must be hard and frustrating because as I said, I'm not too pleased about the situation," said the 100m and 200m world-record holder.

Another Jamaican, Asafa Powell, finished fourth on Saturday, clocking 9.98sec.

REUTERS