(Reuters) – A 6.8 magnitude earthquake hit the sparsely populated southeastern part of Taiwan on Sunday, according to the island's weather bureau, sparking a tsunami warning.

The U.S. Geological Survey measured the quake at a magnitude 7.2 and at a depth of 10 km (6.21 miles).

Taiwan media said a low rise building housing a convenience store collapsed, while at least one train carriage was de-railed at a station on the east coast.

It was unclear if there were any casualties.

The U.S. Tsunami Warning Center issued a warning in Taiwan after the tremor. It said hazardous tsunami waves were possible within 300 km (190 miles) of the epicentre along the coasts of Taiwan.

Japan’s weather agency issued a warning for tsunami waves of 1 metre for part of Okinawa prefecture following the earthquake.

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