I found there was no central record to show occasions where covert baggage searches were carried out, but no seizures were made.
The absence of these records meant that no assurance could be provided to demonstrate that this power was being used in a lawful, proportionate and controlled manner.
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White House budget officials outlined the information during a telephone call with reporters given on condition of anonymity.
A prison officer is to be charged with gross negligence manslaughter and misconduct in public office in relation to the death of an inmate.