US President Donald Trump demanded an investigation Wednesday into what he called "triple sabotage" after an escalator, teleprompter and sound system malfunctioned as he addressed the United Nations.

The UN has said the events that happened while Trump was at its headquarters in New York on Tuesday were accidental, and partly blamed them on White House staff.

But in a long, angry social media post, Trump described the string of mishaps as "very sinister," called for people to be arrested and said the Secret Service was also probing.

"This wasn't a coincidence, this was triple sabotage at the UN. They ought to be ashamed of themselves," Trump said on his Truth Social platform.

"I'm sending a copy of this letter to the Secretary General, and I demand an immediate investigation. No wonder

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