Jamaica's triple Olympic champion Usain Bolt revealed on Wednesday he would compete in the Bislett Games in Oslo on June 7 as he cranks up his preparations for defending his titles in the London Olynpics in August.

The 25-year-old, world record holder in the 100 and 200m, said that he hoped his run in Oslo would be an important step on his way to London.

"My preparations have been good this fall," said Bolt, who surrendered his world 100m title last year when he was disqualified for a false start in the final. "I am injury free, working hard and everything is going according to plan. I hope to come to Bislett prepared and ready to run a great race.