Japanese Cabinet Secretary, Edano Yukio, says they have “…explored all possibilities…” regarding the Fukushima Daiichi nuclear power plant.  So far officials are at a loss as to where the radiation leak is coming from.

At this point they can’t tell if the leaking radiation is coming from spent fuel pools, or reactor cores.  This is why, earlier in the day, officials announced that they have no way to stop radiation leakage in the short term, and asked people to voluntarily evacuate.