Jamaican sprint superstar Usain Bolt has set a new best time of 9.98 seconds for the rarely run 100 metres indoors at Warsaw's national football stadium.
The Olympic champion and world record holder (9.58s) on Saturday eclipsed the previous best mark for the distance of 10.05 set by Namibian Frankie Fredericks in 1996.
The Warsaw stadium had its roof closed for the event.
Bolt, in action as preparation for Zurich's Diamond League meeting next week, said: "Above all I wanted to get through this season without any injury as I've suffered enough over the past few years.
"Over the next meetings starting with Zurich I'm hoping to run ever quicker."
Bolt had only run his first 100m of the year in an exhibition race on Rio de Janeiro's Copacabana beach on August 17 in a time of 10.6sec.
His last competitive individual appearance at the 100m came in Brussels last year while at last month's Commonwealth Games in Glasgow he was part of the victorious Jamaican 4x100m relay team.
Bolt will compete in his final Olympics in Rio in 2016 before calling time on his career in 2017 after the world championships.
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