The New York City's medical examiner's office will search for human remains in an alley where a suspected part of a hijacked September 11th jet is wedged between two buildings.
Police have declared the area a crime scene at least until forensics experts finish their work.
A piece of a landing gear is stuck between an Islamic center and another building in lower Manhattan, close to where the World Trade Center stood. The name "Boeing" and a series of numbers can be seen.
Police say a rope is tied around the part.
The part may have come from one of two hijacked jets that al-Qaida terrorists flew into the World Trade Center on September 11th, 2001. About 3,000 people were killed in the worst terrorist attack ever on U.S. soil.