TOKYO, July 5 (Xinhua) -- An earthquake with a preliminary magnitude of 6.3 jolted northeastern Japan on early Monday morning, the Japan Meteorological Agency said.
There were no immediate reports of injuries or damage from the 6:56 a.m. quake. No tsunami warning was issued.
The focus of the quake was off the coast of Iwate Prefecture at a depth of about 30 kilometers, the agency said.
