Japanese Customs Officials are asking the public to return a box of marijuana that was placed in a passenger’s bag for a routine security test that went wrong.

From the BBC News:

A customs officer hid a package of the banned substance in a side pocket of a randomly chosen suitcase in order to test airport security.

Sniffer dogs failed to detect the cannabis and the officer could not remember which bag he had put it in.

Anyone finding the package has been asked to contact customs officials.

According to the AFP, the five ounces placed in the bag has street value of $10,000.