U.N. spokesperson Stephane Dujarric said a readout of the escalator’s central processing unit indicated it “had stopped after a built-in safety mechanism on the comb step was triggered at the top of the escalator.”
He said Trump’s videographer had been traveling backwards up the escalator to capture his arrival with First Lady Melania Trump.
“The videographer may have inadvertently triggered the safety function,” Dujarric said in a statement. “The safety mechanism is designed to prevent people or objects accidentally being caught and stuck in or pulled into the gearing.”
The White House did not immediately respond to a request for comment on the U.N. findings.
On the teleprompter, Trump told the General Assembly on Tuesday: “I can only say that whoever’s operating this teleprompter is in big trouble.”
However, a U.N. official said the White House had operated its own teleprompter.
After Trump finished speaking, U.N. General Assembly President Annalena Baerbock said: “The U.N. teleprompters are working perfectly.”