Tuesday's blast, which is counted as the third continuous blast in the nuclear plant, reportedly occurred at the No 2 reactor in Fukushima. The recent blast is believed to have hit each of the three crippled reactors at the plant.
Tokyo Electric Power Co officials informed that the latest blast happened near a suppression pool, which removes heat under a reactor vessel. Sources reported that the recent explosion injured 15 workers and military personnel and exposed up to 190 people to elevated radiation.
The first explosion at the nuclear plant happened on Saturday, Mar 12 following a massive earthquake and tsunami just a day before. Japanese news agency Kyodo on Sunday reported that the cooling system had stopped working in a sixth reactor. Watch Japan Tsunami Videos.
Soon after the first explosion, Japan ordered to evacuate almost 180,00 people from the area near the damaged nuclear power plant, informed the UN nuclear watchdog.
Then on Monday, another Hydrogen blast crippled the region when a massive column of smoke was seen belching from the plant's No 3 unit. However, sources informed that the reactor, previously, was under emergency watch for a possible explosion.
The total death toll in the country is feared to have crossed 10,000. After the nuclear explosions, up to 160 may have been exposed to radiation, sources confirmed.