Industry minister Yoichi Miyazawa said Tuesday safety measures may have been inadequate at a flower bed in Shizuoka Prefecture where two men were killed and five people were injured by an electric fence.

"There is a possibility that appropriate measures such as putting up danger signs and installing a breaker system was not taken," Miyazawa said.

The Ministry of Economy, Trade and Industries oversees the electricity business law, which covers electric fences. METI dispatched two officials to inspect the site.