An earthquake of magnitude 6.6 struck south of Kermadec Islands early on Monday, the European-Mediterranean Seismological Centre (EMSC) said.

The quake was at a depth of 30 km (18.6 miles), EMSC said.

There was no risk of a tsunami after the quake, the U.S. tsunami warning system said.

(Reporting by Maria Ponnezhath in Bengaluru; Editing by David Goodman)