Philippine President Rodrigo Duterte has turned down a meeting with UN Secretary General Ban Ki-moon, after threatening to quit the body last month over criticism of his war on drugs.
UN chief Ban had requested the bilateral meeting in Laos, which is hosting a summit of Association of Southeast Asian Nations (ASEAN) leaders next week, but officials from Duterte's office said he could not fit it into his schedule.
"A meeting was requested but we could not agree on a time," Ban's spokesman Stephane Dujarric said.
A second UN official said the request for a meeting was rejected because of a "scheduling incompatibility".
Two UN human rights experts last week urged Manila to stop a wave of extra-judicial executions and killings that have escalated since Duterte won the presidency on a promise to wipe out drugs, drawing an angry response from Manila.
Philippine presidential spokesman Ernesto Abella confirmed Duterte would not be meeting Ban, but declined to comment on whether that was connected to his criticism of the UN
"PRRD has his own reasons for not meeting up with some leaders," he said, using the initials for President Rodrigo Roa Duterte. "This is no reason to speculate about the Philippines' relationship with the community of nations."
A third UN official, who declined to be identified, said it was "basically unheard of" for a leader to be too busy to meet the secretary general.
"Drug policy and human rights would have been top of the UN's list at the meeting," the official said.
Following the criticism of the surge in killings that has accompanied his anti-drugs campaign, Duterte railed against the United Nations in a news conference, suggesting he might pull out and invite China and African nations to form an alternative global organisation.
The following day his foreign minister, Perfecto Yasay, said the Philippines remained committed to the United Nations and would not be leaving, "despite our numerous frustrations with this international agency".
The Philippines is due to take over the rotating chair of ASEAN from Laos in 2017.
