Nelly Florida Riama, a deputy director for geophysics at Indonesia's Meteorology, Climatology, and Geophysical Agency, warned that while the tsunami warning was over, "aftershocks are still occurring."

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 prompted hundreds to evacuate.

Authorities have received no immediate reports of damage or casualties