An earthquake with a magnitude of 5.5 shook central Japan early Friday but no tsunami warning was issued, Japan's weather agency said.

The quake struck at 2:18 a.m. in Ishikawa Prefecture with a focus 12 kilometers below the surface, the Japan Meteorological Agency said. The quake registered upper 5 on the Japanese seismic intensity scale of 7 in Wajima and lower 5 in Wajima, both in the prefecture.

[Source: Japan Meteorological Agency]

There were no immediate reports of injuries or property damage from the quake, according to local authorities in Ishikawa Prefecture.

In neighboring Toyama Prefecture, however, a man in his 60s sustained light injuries as something slipped from a shelve hit his head, local police said.

A weather agency official told a press conference in Tokyo that people living in the area who felt a strong shake should be prepared over the next week for another possible quake with a similar intensity.

The temblor was also felt across a wide area from western Japan to northeastern Japan, the agency said.