The tremor occurred about 42 kilometers north-northwest of Kilju, North Hamgyong Province, at 7:55 a.m., according to the Korea Meteorological Administration.
The epicenter was at a latitude of 41.31 degrees north and a longitude of 129.16 degrees east at a depth of 5 km, it said, Yonhap reported.
Kilju is home to the Punggye-ri nuclear test site, where North Korea conducted all six of its nuclear tests.
In 2022 alone, eight natural earthquakes were reported to have struck the area.
RHM/PR