There was, however, no immediate report of any casualty or damage to property.

The temblor, which struck at 5.00 a.m (Beijing Time), had its epicentre 70 km southeast of the headquarters of Yilan (or Ilan) county authorities and a depth of about 62 km, Xinhua reported.

The Beijing-based China Earthquake Networks Centre, however, said it was a magnitude-5.9 quake, with the epicentre located at 50 km below the surface.