Usain Bolt withdraws from home event

Six-time Olympic gold medal winner Usain Bolt has been forced to pull out of a 100m race in his native Jamaica this weekend.

The 26-year-old, who was also tipped to compete over 200m in Kingston, has made the decision because of a hamstring injury that he picked up during a recent training session.

Bolt's compatriots Yohan Blake and Asafa Powell were also due to race, but both have withdrawn because of muscular problems.

Despite his absence, Bolt is expected to return to training next week.