Scientists have warned that a string of volcanic eruptions along the volatile 'Ring of Fire' could have been caused by an enormous earthquake in Russia.

A volcano on Russia's eastern Kamchatka Peninsula erupted overnight into Sunday for what scientists said is the first time in hundreds of years, days after a massive 8.8-magnitude earthquake.

Russia's Ministry for Emergency Services lifted a tsunami warning for the Kamchatka Peninsula on Sunday (Aug 3) after a 7.0 magnitude earthquake hit the nearby Kuril Islands. The ministry had said earlier on the Telegram messaging app that expected wave heights were low,