On Monday morning, the geophysical service said that a 5.7-magnitude earthquake struck at a distance of 48 kilometers (30 miles) from the Russian city of Petropavlovsk-Kamchatsky.
Later, in the morning, the earthquake’s magnitude was revised to 6.9.
The epicenter was located at a depth of 99.5 kilometers (62 miles), in the waters of the Avacha Bay.
Eyewitnesses reported that in Petropavlovsk-Kamchatsky, walls and windows were shaking because of the earthquake.
No tsunami warnings were issued, according to local emergency authorities.