A powerful 7.7 magnitude earthquake off Indonesia's coast triggers tsunami warnings, following strong aftershocks in the region.

A powerful magnitude 7.7 earthquake has struck off the coast of Indonesia. No immediate casualties or damage were reported. The U.S.

The 7.7-magnitude earthquake off Flores island in eastern Indonesia triggered a tsunami warning - later lifted - and sent thousands of people fleeing.

Authorities have received no immediate reports of damage or casualties