Two-time 100-meter Olympic gold medalist Usain Bolt withdrew from the Jamaican Olympic Trials on Friday after suffering a Grade 1 hamstring tear.

Bolt won his 100-meter semifinal heat with a time of 10.04 seconds. He complained of a tight hamstring after his preliminary race on Thursday, and the pain resurfaced after his semifinal run. Bolt could miss the Olympics.

Later on Bolt  tweeted details.