Police officers patrolled on Segways, fast-moving electric standing motorcycles, and checked trash cans for suspicious objects. "We plan to increase the number of police officers assigned to important facilities such as foreign embassies to prevent terrorism," police chief says.

"I would like to ask for your understanding and cooperation in security," he adds. "There have been a series of terrorist attacks targeting large-scale international conferences, etc., so the Metropolitan Police Department raised the alert level from the 12th"