"Now all the ministries and agencies related to the sanctions are coordinating their positions," Suga said.
"Quick measures will be taken in accordance with the decisions of the UN Security Council,” he added.
The move by Tokyo came after Iranian Foreign Minister Mohammad Javad Zarif and European Union’s Foreign Policy Chief Federica Mogherini late on Saturday, announced in a joint statement that the implementation of a nuclear deal finalized by Tehran and world powers back in July 2015 has officially been started.
The announcement was made after the International Atomic Energy Agency (IAEA) confirmed Iran’s commitment to the Joint Comprehensive Plan of Action (JCPOA).
In the meantime, the Mainichi newspaper reported on Monday that Tokyo is interested in restoring the rights for developing the Azadegan oil field, in Iran’s southwest, which is one of the largest in the world. Its oil reserves are estimated at 35-42 billion barrels.
Japan’s Impex Company owned 75% of shares in the project but abandoned it after the introduction of the sanctions against Tehran.
Japan’s producers of cars and household appliances are also interested in Iran’s market with the population of some 80 million people. Nissan Motors is already in talks on establishing an assembly plant in the country.