The triple Olympic gold medallist Usain Bolt may retire from sprinting after the 2012 London Olympic Games.
The 24-year-old world and Olympic 100 metre and 200 metre champion says he will assess his position after London but could move into other events such as the long jump.
Bolt and compatriot Asafa Powell, the reigning 100 metre champion, have chosen not to run at next month's Commonwealth Games in Delhi.
