The quake struck 60 miles (98 kilometers) southeast of the city of Severo- Kurilsk near the sparsely populated Russian-administered Kuril Islands, at a depth of 20.2 kilometers (12.5 miles) according to the US-based seismologists.
The earthquake struck at 1:12 am local time on Sunday (1312 GMT Saturday).
A 6.0-magnitude earthquake was reported in the same area by the USGS on Friday. The remote region is prone to earthquakes.
There were no immediate warnings of any tsunami risk.