Council members emphasized "the importance of full compliance" with the six rounds of increasingly tougher sanctions in a statement after closed-door discussions.
North Korea continues to defy the sanctions dating back to 2006, carrying out nuclear and ballistic missile tests to develop the ability to deliver nuclear weapons at long distances.
Its leader, Kim Jong Un, has also been accused by South Korea of sending agents to Kuala Lumpur, Malaysia, to kill his half brother Kim Jong Nam using what Malaysian police said was VX nerve agent, a banned chemical weapon.
"Once they have done that then we can take it forward," Rycroft told reporters. "I very much hope that any country, in this case Malaysia, with potential evidence of something as serious as this makes it available as soon as possible."
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Japanese Ambassador Koro Bessho said, "We're basically waiting for Malaysia to come up with a clear-cut decision on this."
Ukrainian Ambassador Volodymyr Yelchenko, the current council president, said the attack on Kim Jong Nam was not discussed at Monday's meeting, which focused on implementation of North Korea sanctions.
Italy's UN ambassador, Sebastiano Cardi, who chairs the North Korea sanctions committee, said he will be spearheading efforts to get more of the 193 UN member nations to report on what they are doing to implement the sanctions. He said 77 countries have reported on the sanctions resolution adopted last March, "but we have to speed up this process.
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