Government inspectors completed a two-day probe Sunday into the inspection records of nuclear power plants operated by three utilities embroiled in coverup scandals.

The inspectors from the Nuclear and Industrial Safety Agency began the on-site investigations Saturday, examining the records of Tokyo Electric Power Co., Chubu Electric Power Co. and Tohoku Electric Power Co. The agency is part of the Ministry of Economy, Trade and Industry.

Of the four plants covered, five were inspected Saturday, with that day's work ending at Tepco's Fukushima No. 2 plant in Fukushima Prefecture.