Jamaica's Olympic sprint champion Usain Bolt, currently recovering from a foot injury, said Friday he is not ready to race at meets in Ostrava or Paris.

World record holder Bolt had been expected to make his return on the track at Ostrava in the Czech Republic on June 17 with the Diamond League meet in Paris on July 5.

The six-time Olympic champion said that he was not ready to return after missing several weeks of training in March and April.