Nineteen more people were found to have been exposed to radioactivity, in addition to three cases of exposure recorded Saturday, the Kyodo News reported Sunday.

Tokyo Electric Power Co. has notified Japan's nuclear safety agency that the radiation level at the Fukushima No. 1 nuclear power plant has exceeded the legal limit.

Hourly radiation at the site was measured at 882 micro sievert, in excess of the allowable level of 500.

The agency also said the company acknowledged that the No. 3 reactor of the quake-hit Fukushima plant had lost its cooling functions.