The last major temblor, a magnitude 7.6 also centered in Nantou County, struck in 1999.

WSJ: Earthquake Hits Central Taiwan

Lin Wan-ching a teacher from hard-hit Nantou county, says a home with two illegal floors toppled into her residence.

CNN: Quake Politics

Workers removed fallen rocks and repaired a damaged mountain road in Nantou, allowing more than 100 stranded tourists to pass.

WSJ: Quakes Kill 2 in Taiwan, Injure 33 in Philippines

The Nantou County government said it expected to release an initial report of damages and injuries later in the day.

WSJ: Earthquake Hits Central Taiwan