A magnitude 7.3 earthquake struck offshore of Japan's crippled nuclear power plant early on Saturday, triggering small tsunamis but causing no damage.
An earthquake official with the Japan Meteorological Agency said the quake was an aftershock of the magnitude 9.0 earthquake and tsunami that struck the same area in 2011, killing about 19,000 people and devastating the Fukushima Dai-Ichi nuclear power plant.
There was no damage and only one minor injury was reported, the national Fire and Disaster Management Agency said. Tsunamis of up to 40 centimetres hit four areas along the coast, but a tsunami advisory was lifted less than two hours after the quake.
