TOKYO, Dec. 26 (Xinhua) -- An earthquake with a preliminary magnitude of 5.6 struck off Aomori Prefecture in northern Japan early Friday, the country's weather agency said.
The temblor occurred at 1:17 a.m. local time off Aomori's Pacific coast at a depth of 40 km, measuring 3 on Japan's seismic scale of 7, said the Japan Meteorological Agency.
The quake's epicenter was located at a latitude of 41.2 degrees north and a longitude of 142.6 degrees east.
No tsunami advisory was issued.
