The NRA blasted TEPCO's efforts to prevent radioactive water from flowing freely into the ocean, stating that they have been "ineffective" with "little effect being seen".
Masaya Yasui, an emergency response official at the NRA secretariat, said that the amount of radioactive material flowing into the sea is rising. His comments were based on sea water samples collected and tested from near the plant.
Thursday's leak and massive spike in radioactivity at the plant and the likely contamination of the sea off the coast of Japan's northeast where the plant is located, comes just one day after Prime Minister Shinzo Abe told a lower house session that the situation at the Fukushima plant was "under control".
Abe's comments were dismissed as unfounded by Banri Kaieda, head of the main opposition Democratic Party of Japan (DPJ), who claimed Abe's consistent mantra that the situation is "under control" was "facetious".