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 [...]

Greenpeace is accusing a Japanese fishing company of smuggling whalemeat onto the black the market. 
From the Guardian: 
Anti-whaling campaigners said today that they had uncovered an embezzlement ring at the heart of the Japanese whaling fleet, accusing crew members of stealing choice cuts of whale meat worth millions of yen for sale on the black market.
Greenpeace’s [...]

An estimated $9 billion is spent on illegal drugs in Japan.
Source: Jasper Becker, Rogue Regime: Kim Jong-Il and the Looming Threat of North Korea,
(New York: Oxford, 2005), pg. 162.

The Japan Patent Office estimated that companies in Japan lost 9 trillion yen ($75 billion) due to counterfeit goods in 2002.
Source: Yomimuri Shinbun, ” Chinese fakes costs trillions / Exports of counterfeit Japanese goods to Middle East on the rise,” January 5, 2007.

Source: MRAG and the University of British Colombia Fisheries Centre, “The Global Extent of Illegal Fishing,” April 2008, pg. 7.

Source: Anson Musselman, “Sexual Abuse and Human Trafficking in Japan,” UCLA International Institute, November 17, 2003. 

Between January and June 2007, a half-year record of 331,136 counterfeit items were seized in Japan.
Source: Kyodo News, “Fake brand seizures ht new half-year high,” Japan Times, August 24, 2007.

In 2005, Japan’s film industry loss an estimated 80 billion yen ($658 million) to piracy.
Source: Japan Patent Office, “FY 2004 Survey Report on Losses Caused by Counterfeiting”,March 2005.

Japan is one of the world’s largest markets for methamphetamines with approximately 80 percent of all drug arrests in Japan involved methamphetamines.
Source: 2007 International Narcotics Control Strategy, “Southeast Asia: Japan,”, United States Department of State, March 2007.