Scan this barcode to access this page with your mobile phone.

A state of emergency has been announced at a second quake-hit nuclear plant in Japan amid warnings of another explosion. The International Atomic Energy Agency declared the measure after excessive radiation levels were recorded at Onagawa, in the country's northern Miyagi region. Experts at the agency said it was the lowest grade state of emergency on the scale. It comes after chief cabinet minister Yukio Edano warned of a hydrogen blast in reactor three at the Daiichi plant in Fukushima. Video by Sky News. Tweet this video.

japan, quake, earthquake, tsunami, state, of, emergency, tokyo, news