6.6 quake hits Tonga

A magnitude 6.6 quake has struck the Pacific island nation of Tonga this morning. 

The quake at 9.05am (local time) was at a depth of 10km, the US Geological Survey said.

It was earlier recorded as a 6.8 quake, but revised down. 

The US National Tsunami Center said it did not expect a tsunami.