A man claiming responsibility for landing the radioactive drone found on the roof of the prime minister's office has turned himself in to the Fukui Prefectural Police, police sources said Friday.
The man, described as a Fukui resident in his 40s, told officers he pulled the stunt to protest the government's policies on atomic power.
The police have not yet verified his claims.
A drone reportedly carrying a radioactive payload was found on the roof of the prime minister's office at about 10:30 a.m. Wednesday.
According to the police, the craft was equipped with a camera, what appeared to be two flares, and a brown container containing a liquid that later turned out to have a slight amount of cesium in it.
The aircraft, which had been decorated with a radiation sticker, was identified as a Phantom drone made by SZ DJI Technology Co. of China. The Phantom is only sold in white but the one found on the rooftop had been painted black.