A man was arrested Saturday in Fukui Prefecture for allegedly flying the drone found earlier this week on the roof of Prime Minister Shinzo Abe's official residence, investigators said.

Yasuo Yamamoto, 40, of the city of Obama, presented himself to the Fukui Prefectural Police on Friday evening and said he landed the drone on the rooftop of the prime minister's office to protest the government's nuclear energy policy.

Yamamoto had sand with him and what appeared to be the controller for a drone, sources said. He was quoted as saying he had put sand from Fukushima Prefecture, home to the meltdown-ridden No. 1 nuclear plant, into a plastic bottle that was attached to the unmanned aircraft.