U.S. President Donald Trump's announcement that he has tested positive for the coronavirus sent Tokyo stocks sliding Friday afternoon but drew a quiet response from the central government.

Chief Cabinet Secretary Katsunobu Kato said he is aware of the news, but added the government is not in a position to comment on that as well as on the U.S. presidential election. Kato also noted that Trump's doctor had said the American leader is feeling fine.

"We have not heard so far that any changes in schedule were made to U.S. Secretary of State (Mike) Pompeo's visit to Japan," Kato said, referring to the top American envoy's expected visit to Tokyo next week.