Even more bad news out of Japan this evening as yet another explosion has occurred at the Fukushima nuclear power plant.

This is the third explosion to rock the nuclear reactor in the past four days.  The blast comes on the heels of two other hydrogen explosions at the plant, the most recent of which occurred on Monday.

The Fukushima nuclear reactor has been on the verge of meltdown ever since Friday’s massive earthquake and tsunami devastated the region, knocking out power to the cooling system used to keep nuclear material from melting down.

This third explosion occurred at 6:10 a.m. local time Tuesday morning, according to a spokesperson for the Nuclear Safety Agency.

Tokyo Electric Power Co. says the blast took place near the suppression pool in the reactor’s containment vessel.  The pool appears to have been damaged in the blast, according to chief government spokesman Yukio Edano.

He added that the measuring devices used in the vicinity didn’t yet show a rise in radiation as a result of the damage.

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