Antiterrorism security flaws found at TEPCO's Fukushima nuclear plants

TOKYO - Japan's nuclear watchdog said Thursday that security flaws in the handling of antiterrorism information have been found at Tokyo Electric Power Co. Holdings Inc.'s Fukushima Daiichi and Fukushima Daini nuclear power plants, following similar lapses at its Kashiwazaki-Kariwa plant in Niigata Prefecture.

The Nuclear Regulation Authority said multiple copies of such data, which are required to be kept under strict control in designated locations, had been stored in shared computer folders. The NRA said it will continue additional inspections to determine why the mishandling occurred.