He cited records showing that scores of calls within minutes were marked by a notation that means no responders were dispatched.

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Senior staff said they had good records of the work and believed pupils could still be marked.

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Senior staff previously said they had good records of the work and believed pupils could still be marked.

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The documents are a mixture of the every day - traffic tickets, personnel records - and the potentially critical, including filing cabinets marked "Murders" and "Disappeared".

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The system is marked by trust and informality, and operators are as sketchy with their records as any bookie--they have nothing but a scribble of first names or code words and a few details of the transaction.

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