Japan's top tariff negotiator, Ryosei Akazawa, held "in-depth exchanges" over the phone with U.S. Commerce Secretary Howard Lutnick on Thursday and Saturday, as Prime Minister Shigeru Ishiba doubled down on a refusal to compromise on his country's national interests.

A pause on a 24% "reciprocal tariff" on imports from Japan expires on July 9, although U.S. President Donald Trump has suggested the rate could be even higher.

The Japanese government also said in a statement that it intends to continue actively coordinating with the U.S. side on the matter, as it worked to avert higher tariffs.