Partial meltdown likely under way at power plant
washingtonpost.com
washingtonpost.com
Also they quote Yukio Edano as saying it's "highly possible" there was a meltdown. What he actually said was in response to a question asking if a meltdown could occur. His response was...
"it's highly possible.Because it’s inside the reactor, we cannot directly check it but we are taking measures on the assumption of the possible partial meltdown"
To me his actual response doesn't match how the post used it