Two men, aged 30 and 41, have been removed from the aircraft and taken to a police station for questioning, Essex Police said.
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The chandelier crashed onto a table of around a dozen customers during Sunday lunch.
The RMT union says 500 track patrol staff will walk out for 24 hours from 6.30am on Friday in a dispute over the use of private contractors.
The kitten, called Luke, was found in a park in east London, His tail had been sliced off along with the bottom of his feet.