TOKYO - A magnitude 7.3 earthquake struck southern Japan early on Saturday, killing at least six people, injuring many more and bringing down buildings, media reported, just over a day after a quake killed nine people in the same region.
Authorities warned of damage over a wide area, as reports came in of scores of people trapped in collapsed buildings, fires and power outages.
Residents living near a dam were told to leave because of fears it might crumble, broadcaster NHK said.
Saturday's tremblor triggered a tsunami advisory, although it was later lifted and no irregularities were reported at three nuclear power plants in the area, a senior government official said.
