Duterte said he once threw a man from a helicopter, would do it again

Philippine President Rodrigo Duterte has threatened corrupt government officials with the prospect of being thrown out of a helicopter mid-air, warning he has done it himself before and had no qualms about doing it again.

The fiery-tempered former prosecutor said he once hurled a Chinese man suspected of rape and murder out of a helicopter.

"If you are corrupt, I will fetch you using a helicopter to Manila and I will throw you out. I have done this before, why would I not do it again?" Duterte said during a speech to victims of a typhoon on Tuesday, a clip of which is posted on a video feed of the president's office.

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Duterte's latest threat comes just a few weeks after he admitted killing people during his 22 years as a mayor of Davao City, sometimes riding a motorcycle looking for "encounters to kill". Some senators have warned Duterte he risks impeachment over his comments.

He has repeatedly said those killings were part of legitimate police operations, including a hostage incident, and those killed were criminals, not suspects.

It was not immediately clear when or where the helicopter incident Duterte spoke of took place.

In an interview on Thursday with the ABS-CBN news channel, Duterte was non-committal when asked if the incident really happened.

"Helicopter to throw a person?" he asked. "And if that is true, I will not admit it."

His spokesman, Ernesto Abella, suggested earlier the story was an "urban legend".

Duterte also said six people arrested last week during a seizure of more than half a tonne of methamphetamine, known locally as "shabu", in the capital were fortunate he was out of town.

"They were lucky I was not in Manila that time. If I had known there were that much shabu inside a house, I would definitely kill you," he said.

"Let's not make any drama, I will personally gun you down if nobody else will do it."

The United Nations' top human rights envoy has called for an investigation into Duterte's claims of killing people, to which Duterte last week responded by calling him "stupid", an "idiot" and a "son of a bitch" who should go back to school.

(Reporting by Martin Petty and Neil Jerome Morales; Editing by Nick Macfie)