Three zoo workers have been arrested on suspicion of causing unnecessary suffering to animals in their care.
CCTV recordings from the elephants enclosure showed two of them being beaten.
The three male members of staff were immediately sacked, and the incidents reported to Leicestershire police.
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The crash which happened last year, left two teenagers needing leg amputations and several other passengers seriously hurt.
But the Home Secretary has pledged support for an application to the Legal Aid Agency to fund legal representation at the inquests.