Mild earthquake tremors have been felt in Delhi and the National Capital Region on Sunday evening. No details of any damage have been reported so far.

Last month's occurrence of 70 earthquakes in just 48 hours along the "Pacific Ring of Fire" sparked fears that a big temblor is on the way to rattle California on the US West Coast.

An earthquake of 7.6 magnitude struck Caribbean Islands on Tuesday, sparking a tsunami warning for the US Virgin Islands and Puerto Rico.

A magnitude of 7.9 earthquake struck the Solomon Islands, raising a tsunami alert for surrounding islands in the South Pacific region.