Former Foreign Minister Masahiko Komura has canceled a trip to Tehran following the death of former Iranian President Akbar Hashemi Rafsanjani, the government said.
Komura, currently vice president of the Liberal Democratic Party, was slated to visit Tehran starting Monday for talks with top officials as a special envoy of Prime Minister Shinzo Abe.
The decision was made as Iran entered a mourning period following the death Sunday of Rafsanjani, a leading figure after the country's 1979 revolution.
After consulting with Iran, the Japanese government will decide whether to rearrange the visit.
Komura was scheduled to visit the country through Friday and hold talks with President Hassan Rouhani to discuss developments on various subjects, including Tehran's landmark 2015 nuclear deal with six major world powers.
Under the deal reached in July 2015 with Britain, China, France, Germany, Russia and the United States, Iran agreed to accept limits on its nuclear program in exchange for the withdrawal of most international sanctions.