NHK said that the number of people who have died totaled more than 1,600, missing were over 10,000 and over 380,000 fled for safety as of Sunday morning.

Explosion occurred twice at the nuclear reactor building of Fukushima No. 1 nuclear plant on Saturday and Sunday, causing leakage of huge radioactivity.

According to the measurement just after the explosion, the numerical value of radioactivity was about 1,000 times that of normal value in the area around the central control room of the nuclear plant No. 1 and more than 70 times in the area of the gate of the power station.

160 people were estimated to have suffered from radioactivity.

In the wake of the explosion at the nuclear plant No. 1, nuclear plants No. 2 and No. 3 were put on emergency alert.

Following the explosions the Japanese government set the area within the 20 kilometers radius centering on the plant No. 1 as dangerous area and demanded the inhabitants there leave the place.

The quake turned Kesennuma City of Miyagi Prefecture into a sea of fire and put the bank in Nagano Prefecture on the verge of collapse. In many other prefectures chaos goes on with railways and roads cut off, traffic paralyzed and drinking water and electricity power supply as well as communications stopped.

Traffic service is completely cut off in Tokyo, leaving millions stranded.

The Japan Meteorological Agency made public the result of analysis of the quake on Sunday.

According to it, the epicenter was about 500 km long and about 200 km wide in the waters off Iwate Prefecture and Ibaraki Prefecture and it is also confirmed that seismic fault-lines were disrupted one by one in succession.

The magnitude of the quake was revised to 9.0 to be the largest in the world history and its energy size was confirmed to be nearly 1,000 times that of the Hanshin quake.

A seismologist of Japan clarified that a fault about 450 km long and about 200 km wide was disrupted 23 meters at the maximum.

More than 100 aftershocks with over 4.6 magnitudes followed on Sunday alone and still more are likely to occur.

It is presumed that more than 7.0-magnitude quake can also follow.