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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The mother of one of the Manchester attack victims has told of the distressing moment she found her daughter being treated after the attack.
Marjorie and Michael Cawdery, both 83, are understood to have been stabbed to death in a killing their family called "incomprehensible".
Detectives have launched a murder investigation following the shooting in Brent, north west London on Friday night.