0328: Seven people are missing and three people have been injured by the explosion at the Fukushima 1 nuclear plant, the AFP news agency reports, quoting an official from Tepco, the company which operates the plant.
0247: Mr Edano said major radiation leaks were unlikely from Reactor 3.
0243: Japanese government spokesman Yukio Edano has just spoken on TV. Says that water injection at Reactor 3 seems to be continuing, and the containment vessel is still safe.
0242: Reactor 3 withstood the explosion(s), its operator says - Japanese news agency Jiji.
0240: The governor of Tokyo orders radioactivity levels in the city to be measured - Kyodo.
0239: The 600 people still living within 20km of the plant where the explosion(s) occurred are ordered to get inside buildings - Kyodo.
0236: The wall of a building collapsed as a result of the blast(s) at Reactor 3 - Japanese TV.
0232: Update on the explosion(s) at Reactor 3: "We believe it was a hydrogen explosion. It is not immediately known if it affected the reactor" - nuclear safety agency spokesman Ryo Miyake.