The Shiveluch volcano in Russia's Far Eastern Kamchatka Peninsula on Thursday ejected an ash cloud of an altitude of 6.5 km above sea level, the Itar-Tass news agency reported.
There was no threat for the population. No emissions of volcanic dust were registered in neighboring villages.
The volcano spewed ash at 3:45 a.m. local time (1545 GMT Wednesday). An earthquake lasting for more than 20 minutes was registered at the volcano.
Shiveluch has been emitting ash daily since Monday. The strongest ash cloud spewed by the volcano reached an altitude of 9.5 km above sea level on Tuesday.
Shiveluch, standing 3,283 meters above the sea level, is Kamchatka's northernmost active volcano. It has been active since September 1980.