JAPAN, April 22: A small drone was found on the roof of the Japanese prime minister's office Wednesday, apparently having been flown there, local media said.
Staff at the official residence -- known as "the Kantei" -- discovered the 50-centimetre (20-inch) craft on top of the five-storey structure in central Tokyo around mid-morning, major broadcasters reported.
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Aerial footage showed dozens of police officers swarming over the roof and helipad of the modern, glass-facade building, with the drone covered by a blue tarpaulin.
Police have not found any explosives on the four-propeller drone, but it did have a camera, a plastic bottle and what appeared to be a flare, NHK said.
Tokyo Metropolitan Police declined to comment on the matter.
Prime Minister Shinzo Abe, who is in Indonesia, works at the building during the day, and commutes from his own private home roughly 15 minutes away.