article_snippet.sent: The police and bomb squad were called after the four-propeller, 50-centimeter wide drone, was spotted by member of the Prime Minister's staff, on the roof of Prime Minister Shinzo Abe principle office and residence in Chiyoda-ku, Tokyo.
article_snippet.sent: Police and security officers investigate an unidentified drone found on the rooftop of the Prime Minister's official residence in Tokyo .
article_snippet.sent: Flown in: The blue tarpaulin covering The drone can be seen next to the helicopter pad on the roof of the Prime Minister's office in Tokyo .
article_snippet.sent: Guarded: Police and the bomb squad were called in after a member of the Prime Minister's staff noticed the drone on the roof of the Prime Minister's office in Tokyo .
article_snippet.sent: Officers comb the roof for clues after a drone (pictured right) landed on top of the Prime Minister's official residence in Tokyo .
article_snippet.sent: a drone was initially covered with a piece of cardboard and covered by blue tarpaulin before being removed.
article_snippet.sent: Chief cabinet secretary Yoshihide Suga said police were investigating Wednesday's incident and that the government may consider new regulations on drones.