Two workers reported missing after the Tohoku quake and tsunami crippled the Fukushima No. 1 power plant were found dead Wednesday in the basement of the No. 4 reactor's turbine building, Tokyo Electric Power Co. said Sunday.

Meanwhile, the beleaguered utility's second effort to plug a radioactive pit leaking contaminated water into the Pacific Ocean also appeared to be failing.

The deceased employees, Kazuhiko Kokubo, 24, and Yoshiki Terashima, 21, were members of the plant's operation management division. They died of shock from blood loss caused by multiple external injuries.