Rescuers were frantically searching on Wednesday for survivors of a powerful earthquake that shook southern Japan, killing at least 13 people, knocking out power to thousands of homes and rupturing roads across the region.

Japanese Prime Minister Sanae Takaichi said authorities were still assessing the full extent of the damage in the area, which was devastated by a deadly quake a decade ago.

At least 50 people were hospitalized and 12 houses collapsed Tuesday when a major earthquake rocked southwestern Japan, state broadcaster NHK reported....

Officials warn of strong aftershocks for about a week