Toshiba’s chief executive has resigned, taking responsibility for doctored books that inflated profits at the Japanese technology manufacturer by €1.12 billion over several years.

A local governor in Japan has given final approval to restart a nuclear power plant in the south of the country, the first to resume operations under new safety rules.

Japan’s nuclear regulator has upgraded the rating of a leak of radiation-contaminated water at its tsunami-hit nuclear plant to a “serious incident” on an international scale.