MOSCOW -- A 7.4-magnitude earthquake struck off the eastern coast of the Kamchatka Peninsula, Russia, the local geophysical service said on Thursday.

The quake occurred at 1858 GMT with its epicenter located about 149 km from Petropavlovsk-Kamchatsky, the regional capital, at a depth of 39 km, according to the Kamchatka branch of the Russian Academy of Sciences' Geophysical Survey.

Kamchatka Governor Vladimir Solodov said in a Telegram post that a tsunami alert has been issued for the eastern coast of the peninsula and residents were being notified.

All services have been put on high alert, he said, adding that authorities began immediate inspections of social facilities and residential buildings after the quake.