The epicenter was monitored at 23.9 degrees north latitude and 121.6 degrees east longitude with a depth of about 10 kilometers, the center said.

Taiwan's weather bureau said earlier it was a 6.1-magnitude quake and its epicenter is about 40.7 kilometers deep.

The US Geological Survey said the quake measures 5.6 on the Richter Scale and its epicenter is about 58.1 kilometers deep.

There has been no immediate report of casualties or damage.