6.4 earthquake strikes Tonga

A strong 6.4-magnitude quake struck off the Pacific nation of Tonga in the early hours of this morning, US seismologists said, but no tsunami warning was issued.

The earthquake struck at 3:52 am and occurred 197 kilometres northwest of the Tongan town of Hihifo, the US Geological Survey said.

The epicentre was at a depth of 10 kilometres.Tonga sits on the so-called Pacific Ring of Fire, a region of frequent seismic activity due to collisions between continental plates.

- AAP

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