Fans of Usain Bolt at his old school
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Usain Bolt: Jamaican school's 100m power cut panic

A power cut struck at Usain Bolt's former school just minutes before the start of the 100m final.

Students who gathered round a television set to watch the race started to panic as the pictures were cut.

The BBC's George Alagiah reports.

Footage courtesy of Skype

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