“Police in Japan have recovered a memory card from the collar of a cat found wandering on an island near Tokyo — the latest bizarre turn in their hunt for a hacker, one who has been taunting them with clues for several months.
In December 2012 the National Police Agency (NPA) — Japan’s central law enforcement body, comparable to the FBI in the United States — offered a bounty of ¥3m (£21,000) for a hacker who had been sending emails from computers around the country containing bomb threats against schools and kindergartens, including one attended by the grandchildren of Emperor Akihito.”
Source: Japanese hacker continues to taunt police with clue strapped to cat (Wired UK)