from the NY times-

BACK ON DRUGS As a test of airport security, a customs officer planted marijuana in the side pocket of a random suitcase at Narita International Airport in Tokyo, the BBC reports (news.bbc.co.uk).

The test failed when the sniffer dogs were unable to detect the pot. But the officer could not remember which bag he had used.

Using an actual passenger’s suitcase is against regulations, and the airport’s customs service has apologized.

Meanwhile, the marijuana is still out there. “Anyone finding the package has been asked to contact customs officials,” according to the BBC. So far, nobody has spoken up.