Key Points
A magnitude-6.0 earthquake struck off northeastern Japan's Fukushima region on Thursday, the Japan Meteorological Agency said, but no tsunami warning was issued...
There were no immediate reports of damage or injuries after the earthquake, whose epicentre had a depth of 40 kilometres (25 miles) and which was also felt in Tokyo...
Japan, one of the world's most tectonically active countries, has strict building standards designed to ensure structures can withstand even the most powerful earthquakes...
Japan's biggest earthquake on record was a massive magnitude-9.0 undersea jolt in March 2011 off Japan's northeast coast, which triggered a tsunami that left around 18,500 people dead or missing...
