Britain's border agency is apologizing for an e-mail that was sent to customs officers at London's Heathrow Airport advising them not to search potential drug smugglers over the busy holiday season.
The agency says the e-mail, which reportedly asked airport staff not to "actively seek to identify any passenger with internal concealments" in the three days up to Christmas, should never have been sent.
Britain's Sun newspaper printed the e-mail, saying it was sent because of a lack of staff at Heathrow.
Jonathan Sedgwick, deputy chief executive of the U.K. Border Agency, said Wednesday that customs teams worked tirelessly over Christmas and successfully intercepted drug shipments. Still, he says a review must take place to find out how the e-mail was sent.