Yusuke Higaki, a business consultant and close friend, left Tokyo for Kyoto, in western Japan, with his family.

FORBES: Japan's Nuclear Fears Hit Tokyo Thursday

Inadvertently, directing police to the cat helped them catch the suspected hacker, Yusuke Katayama, 30, who was seen on CCTV footage with the cat.

BBC: Keyboard

Yusuke Tsunoda, analyst at Tokai Tokyo Securities Co.

FORBES: Nintendo Shares See Two Days of Big Drops After WiiU Reveal