Japan, the United States and South Korea agreed Tuesday to work closely together to deal with issues related to North Korea, such as a possible test launch of what they suspect to be a ballistic missile, according to a Japanese official.

Foreign Minister Fumio Kishida told reporters he and his U.S and South Korean counterparts, John Kerry and Yun Byung-se, reaffirmed their commitment to dealing with a possible provocative act by Pyongyang, in a meeting held on the sidelines of the U.N. General Assembly in New York.

"We shared the recognition that any launch of a long-range ballistic missile would be a clear violation of past U.N. Security Council resolutions even if North Korea calls it a satellite," Kishida said.