The Apollo Theatre
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London's Apollo theatre roof collapses

20 December 2013 Last updated at 17:01 GMT

An investigation has started to find out why part of a theatre collapsed last night, hurting dozens of people.

A section of the roof at London's Apollo theatre in the West End fell down during the show.

Emergency services say 76 people were injured.

The theatre had been almost full with 720 people watching the performance.