North-east Japan's Fukushima nuclear plant performed an emergency shut-down on Friday following a massive earthquake, the Kyodo news agency said.
Reactor cooling systems shut down at Units 1 and 2 of the plant operated by Tokyo Electric Power Co., the industry ministry said.
Japan was hit by a series of powerful quakes on Friday, with two major quakes measuring 8.8 and 7.1 on the Richter scale.
The first 8.8-magnitude quake struck off the country's largest Honshu Island's eastern coast, 373 kilometers to the north-east of Tokyo. The second major tremor, measuring 7.1 on the Richter scale, occurred 505 kilometers to the north-east of Tokyo.
TOKYO, March 11 (RIA Novosti)