Foreign Minister Fumio Kishida and U.S. Secretary of State John Kerry agreed Thursday to cooperate on maritime issues amid growing tensions in the South China Sea, a Foreign Ministry official said.

Although they did not single out China, Kishida and Kerry discussed working together to tackle maritime concerns, with Chinese President Xi Jinping scheduled to visit the United States in September, the official said.

They also agreed to address recent allegations by the WikiLeaks anti-secrecy website that the United States has spied on the central government and Japanese companies.