The Tokyo Electric Power Company (TEPCO) has admitted that up to 120 tons of contaminated water may have seeped into the ground out of a holding tank at Fukushima Daiichi nuclear power plant 1 following the earthquake and tsunami of March, 2011. However, TEPCO said that amount of contaminated water is unlikely to flow into the sea.

Visitors and workers are required to wear protective suits and masks at Japan's Fukushima nuclear power plant, which was rocked by the March 11, 2011 tsunami and earthquake. (Photo:AFP)