Tokyo

JAPAN will strengthen legislation governing unmanned aircraft after a small drone appeared to have fallen on Wednesday onto the roof of the office of Prime Minister Shinzo Abe, who was away at an international gathering in Jakarta.

"There is a risk that unmanned aircraft could be used for a terrorist attack at events such as the Olympics or the G-7 summit," Chief Cabinet Secretary Yoshihide Suga told reporters in Tokyo. "We have to quickly prepare legislation and rules" on the use of drones, the government's top spokesman said.