6.8-magnitude quake off Tonga, no tsunami threat
A 6.8-magnitude earthquake struck off the coast of Tonga Saturday in the tectonically active Pacific region, but there was no tsunami threat, seismologists said. The tremor hit at a depth of 10 kilometres (six miles) some 90 kilometres off the Tonga island of Niuatoputapu, and 230 kilometres southwest of the Samoan capital Apia, the US…