By Alex Zolbert and Jethro Mullen, CNN
updated 7:37 AM EST, Fri December 7, 2012
Tokyo (CNN) -- A powerful earthquake struck off the northeast coast of Japan on Friday evening, rattling buildings in Tokyo and setting off a small tsunami.
It also jarred nerves in a nation still recovering from the devastating earthquake and tsunami in March 2011 that killed thousands of people and triggered the world's worst nuclear crisis in a quarter century.
Some roads were closed and rail services suspended in the northeastern prefecture of Miyagi, where a one-meter (3-foot) tsunami rolled ashore. It was followed by four other waves ranging from eight to 16 inches. Only minor injuries were reported immediately, including five in Miyagi and five on the outskirts of Tokyo.