Landing Gear From 9-11 Terror Attack Found a Decade Later

Airplane debris discovered between NYC buildings by construction crews.
2:26 | 04/27/13

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Transcript for Landing Gear From 9-11 Terror Attack Found a Decade Later
An astonishing discovery here in New York City a piece of landing gear found in an Alley near the World Trade Center more than ten years after 9/11. ABC's John -- is in lower Manhattan with the story and John awareness -- is believed to -- fallen from is quite remarkable. We got a good morning remarkable indeed authorities believe it came from one of the planes that crashed into the World Trade Center it is now lodged between two buildings behind me in an Alley. And because this construction site for -- mosque hasn't been touched in more than a decade authorities don't know just. How it got here that's why police are on board treating this as a crime scene. Investigators this morning are puzzled by an alarming discovery. Take a look at this medal part of an airplane believed to be landing gear from one of the -- Jumbo jets. It crashed into the world trade towers -- that's a longer time. I'm William me -- -- what does -- discovered right now it's now wedged between two buildings just a few blocks from ground zero in lower Manhattan. These space between fifty buildings Sony ATA news now the court has been measured to be -- feet. Point four feet -- seventeen and it's a big part and it's obviously very very. Narrow vote. Confine -- area. Authorities say it was found Wednesday morning by workers doing construction. Investigator suits swarmed the scene at finding a serial number on it with the word. -- the question now how did it get there. Could have been lowered and sometimes it's possible as a -- that's. That's -- -- intertwined with that but -- part. C -- walks on the war but -- doesn't appear to be watching the world. For many New Yorkers its narrow opening wounds. Nearly twelve years old. What does this mean for the families of the victims of 91 I -- those they have. Debbie remains of victims inside -- another example we'll do. Paying -- in depth examination. -- sites seemed -- grown human remains. -- when the police commissioner came here to look at it for himself he actually had to put on a protective suit because. They're not sure if this plane port is toxic. Authorities are handling with care taking their time -- it will determine on -- Monday just how to move it from this location -- beyond -- sensitive situation judge -- thank you for your reporting this morning.

This transcript has been automatically generated and may not be 100% accurate.

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