North Korean leader Kim Jong Un guides the test-fire of Pukguksong-2 on the spot, in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang February 13, 2017. KCNA/Handout via Reuters

WASHINGTON (Reuters) - Senior officials from the United States, South Korea and Japan discussed ways to further restrict funding for North Korea’s weapons programs during talks in Washington on Monday, the countries said in a joint statement.

“The officials considered other possible measures under national authorities, including means to restrict further the revenue sources for North Korea’s weapons programs, particularly illicit activities,” the statement said.

The talks also agreed that North Korea’s nuclear and ballistic missile programs “directly threaten the security” of all three countries, it said.