Olympic champion Usain Bolt is seeking to recover more than $12.7 million that disappeared from his account with a Jamaican investment firm and is willing to take the case to court if necessary, Bolt's attorney said.

Usain Bolt and Michael Phelps towered over the 2016 Rio Games, capping an era of sustained excellence that promises to reverberate through the 2020 Tokyo Olympics and beyond.

Usain Bolt plans to train with Borussia Dortmund as he considers pursuing a football career after his retirement from athletics.

The runners who have lost to Usain Bolt for the past dozen years shower the Jamaican superstar with praise, after he completes his historic "triple-triple" in what he has said will be his final Olympics.

Jamaica unleashes a new sprint sensation as Omar McLeod takes the Rio Olympics 110m hurdles on Tuesday.

Shimmying amid a troupe of semi-naked samba dancers and wise-cracking with journalists, Usain Bolt is determined to bow out of the Olympics with a flourish.

Usain Bolt is promising to let American sprinter Justin Gatlin "feel his full wrath" as he zones in on an unprecedented treble of gold medals.

"My biggest dream at the Olympics is to win three gold medals again. That's my focus, that's what I want," Bolt says in an interview.

Usain Bolt delivers on his top billing by winning the 200metres at the London Diamond League but he is upstaged for once as American sprint hurdler Kendra Harrison breaks one of the oldest world records in the book.

Sprint king Usain Bolt has praised efforts by athletics chiefs to clamp down on doping in the build-up to August's Olympic Games.

Usain Bolt will embark on the first major test of what he plans to be a triumphant swansong Thursday as the Jamaican Olympic athletics trials get under way.

Usain Bolt will fine-tune his preparations for the Rio Olympics by competing at the Anniversary Games in London on July 22, organisers said.

Jamaican Olympic relay gold medallist Nesta Carter's "B" sample for the use of a banned stimulant at the 2008 Beijing Games has returned positive, two sources familiar with the case told Reuters on Wednesday.

Usain Bolt could lose one of the three golds he won at the 2008 Beijing Olympics.

World 100 and 200-meter record holder Usain Bolt of Jamaica opened his 2016 season Saturday with a 100m victory in 10.05 seconds at the Cayman Invitational.

American Justin Gatlin roared to a 100 metres victory in Japan on Sunday, as track and field's pantomime villain kicks off his preparations for this summer's Rio Olympics.

Usain Bolt has made no secret of his desire to one day play for Manchester United, but the sprint king has revealed he has no desire to carry out that ambition while Louis van Gaal remains in charge.

Six-times Olympic champion Usain Bolt has already started his preparations for next year's Rio Games and wants to break 19 seconds in the 200 meters.