Man wielding knife arrested near US embassy in Tokyo

A man wielding a knife was arrested near the U.S. embassy in Tokyo, TBS news reported on Friday.
A riot policeman was injured but the extent of his injuries is unknown, the report said, citing police sources.
The motive behind the attack was not immediately known.
The attack comes days before U.S. President Donald Trump’s planned trip to Tokyo. Trump will meet with Japan’s Emperor Naruhito and newly elected Prime Minister Sanae Takaichi during his October 27-29 stay in Japan, the government has said.