Officials in protective gear check for signs of radiation on children who are from the evacuation area near the Fukushima Daini nuclear plant in Koriyama, March 13, 2011. Japanese Chief Cabinet Secretary Yukio Edano confirmed on Saturday there has been an explosion and radiation leakage at Tokyo Electric Power Co's (TEPCO) Fukushima Daiichi nuclear power plant. The biggest earthquake to hit Japan on record struck the northeast coast on Friday, triggering a 10-metre tsunami that swept away everything in its path, including houses, ships, cars and farm buildings on fire. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: DISASTER ENVIRONMENT ENERGY IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GF2E88U0STU01.