A 6.5-magnitude earthquake hit sea off Taiwan's eastern coast at 05:00 Beijing Time on Sunday, said the island's meteorological authorities, Xinhua reported.
The epicenter was monitored at 24.47 degrees north latitude and 122.39 degrees east longitude, or 70.2 km southeast of the headquarters of Yilan (or Ilan) county authorities, with a depth of 61.9 km.
Xinhua reporters felt house trembling inside a Taipei building.
There has been no immediate reports of any casualty or property loss.
The Beijing-based China Earthquake Networks Center put it at 5.9 on the Richter scale, with the epicenter located at 50 km below the surface.