TOKYO >> A magnitude-5.5 earthquake rattled Yamanashi prefecture in central Japan on Saturday morning, the Japan Meteorological Agency reported. There were no immediate reports of damage or injuries, and no tsunami warning was issued.

The temblor was some 12 1/2 miles deep and hit at 7:43 a.m. local time, the Japanese earthquake-reporting agency said.

Last year, a magnitude-9 quake on March 11 and subsequent tsunami about 140 miles northeast of Tokyo left nearly 20,000 people dead or missing.

Japan is one of the most earthquake-prone countries in the world.