MANILA – (UPDATE) President Rodrigo Duterte on Sunday invited the United Nations to come to the Philippines for a public “conference” on killings linked to his relentless war on drugs.

The UN representative can ask him “all that you want to know,” Duterte said in a televised news conference at the presidential guest house in Davao City.

“Extra-judicial killings, I will do the explanation in public, for international release if you want,” he said.

Duterte’s statement compared to an earlier statement by his spokesman, Ernesto Abella, which chided the UN for “unwelcome meddling.”

Duterte did not name the UN representative, but in a Twitter post on Friday, UN special rapporteur on summary executions Agnes Callamard said she was willing to investigate the killings in the Philippines.

“I am willing to answer. I assume full responsibility for what happened because I was the one who ordered it,” he said.

Duterte on Sunday also criticized the UN for not doing enough to stop violence in Syria, which he blamed on the United States.

“I don’t see anybody from this stupid body complaining about the stench of death” in Syria, he said.

Duterte said the UN should have written him instead of criticizing him in a public statement.

"You have fallen short of the protocol needed to respect, you must be a s***. You did not follow the basic rudiments of protocol," he said.

"Maybe well just have to decide to separate from the UN kung ganauan kayo kabastos p***** e umalis na kami diyan sa inyo [If you are that rude, we will leave you]," he said.

Asked by reporters if he was serious, Duterte said: "The joke is on you." He said the UN should return the country's contributions first before the country could leave the group.