A strong earthquake has struck Russia's far eastern Kamchatka region, the regional governor says, prompting a series of tsunami warnings in the region, but there are for the moment no reports of damage.
The US Geological Survey said the quake was measured at a magnitude of 7.8 and at a depth of 10km.
It said a series of aftershocks followed, measuring up to 5.8.
Russia's emergencies ministry said the quake in the country's far east had a magnitude of 7.2.
Governor Vladimir Solodov said all emergency services had been placed in a state of high readiness, but no damage had been reported.
A tsunami warning was issued for the eastern shore of the peninsula, jutting far out into the Bering Sea and Pacific Ocean.
He said tsunami waves ranging from 0.5m to 1.5m were expected at various poin