"Fukushima tank springs major leak: 120 tons of radioactive water escape from underground facility"

As reported by Kyodo in the Japan Times, a water storage tank holding more than 13,000 tons of highly radioactively contaminated water was leaked 120 tons into the ground, and may leak another 47 tons before the remainder can be transferred to other tanks nearby. The amount of radioactivity already leaked is estimated to contain 710 billion becquerels of radioactivity.

The article reports: '“It is the largest amount of radioactive substances that has been leaked” since the crippled facility’s cold shutdown was declared in December 2011, Tepco official Masayuki Ono said.'