Magnitude 7.7 earthquake strikes off coast of Indonesia and tsunami warning issued

Quake hit Indonesia's Flores region with a depth of 10km early on Saturday morning

A powerful 7.7-magnitude quake has struck off the coast of Indonesia, the US Geological Survey said. No immediate casualties or damage were reported.

The quake hit Indonesia's Flores region with a depth of 10km at 5:58am on Saturday Indonesia time. It's epicentre was 68km (42 miles) north-northwest of the city of Ende in East Nusa Tenggara province.