New York police say that part of what appears to be a section of landing gear from one of the jets that were flown into the World Trade Center during the 9/11 terror attacks has been found.
The debris was discovered wedged between two New York City buildings.
An investigation is now under way to see if any human remains can be recovered.
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Addressing an audience in America, the former PM said of Europe's single currency that it was not working "as intended".
The countries lawmakers voted to impeach President Park Geun-hye in the wake of mass protests against her.
The former presidential candidate, who has herself been the target of false news reports, said such stories had 'real-world consequences'.