TOKYO - A 5.8 magnitude quake hit Japan's Fukushima Prefecture at 2:25 a.m., local time, with strong tremor felt in Tokyo.

The focus was initially detected at 37.1 degree of north latitude and 140.7 east longtitude, with a depth of 20 km. The epicenter was close to the crippled Fukushima Daiichi nuclear plant.

The quake was registered at upper 5 in Japan's seismic intensity scale of 7 in parts of the prefecture.

No tsunami warnings were issued and no immediate reports on damage and injuries.