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.
More top news
Britain's Lewis Hamilton will join an elite club of double Formula One champions if he can secure a top-two finish in Abu Dhabi today.
A naked man fell through the ceiling of a women's toilet at a US airport before fleeing and "viciously assaulting" an elderly man.
Emeli Sande has said the Band Aid song needs rewriting and apologised if the latest version "caused offence".