Japan quake: Radiation testing

begins amid mass evacuations

13 March 2011 Last updated at 14:55 ETHelp

Concerns are being raised over three separate nuclear reactors at Fukushima

following an explosion at one on Saturday, with some fearing the reactors could

overheat leading to a meltdown.

Officials are reassuring the public there is no immediate danger but an exclusion

zone around the facility has been extended and the evacuation of people from the

area now runs into the hundred of thousands.

Chris Hogg reports.