U.S. Homeland Security Daily Open Source Infrastructure Report 18 June 2012:
June 14, NHK World ? (International) High radiation one floor above reactor. Tokyo Electric Power Company (TEPCO) said it has detected extremely high levels of radiation on a floor just above the No. 2 reactor at the crippled Fukushima nuclear plant in Fukushima Prefecture, Japan. TEPCO sent a robot into the reactor building June 13 to take video images and radiation measurements. The company said a reading of 880 millisieverts per hour of radiation was detected on the fifth floor, which is 4.5 meters above the reactor containment vessel. TEPCO suspects radioactive substances leaked from the No. 2 reactor moved through the location. TEPCO must find and repair the damaged parts of the reactor to recover melted nuclear fuel before starting
decommissioning. But it said high radiation often stops workers from entering the building. Source: http://www3.nhk.or.jp/daily/english/20120615_02.html
The source isn't available now, but I found a video of the report:

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