Investigators on Monday released new information surrounding a piece of newly discovered wreckage from the September 11th attacks.
The NYPD says a Boeing Company technician confirms the 5-foot-long part, believed to have come from one of the two hijacked planes that hit the Twin Towers, was actually part of a trailing edge flap support structure.
It was found last week wedged between an apartment building and Park51, an Islamic community center that has been the cause of some major controversy.
Investigators initially thought the wreckage was a section of landing gear due to similar hydraulics.
It's not clear which of the two planes it came from.
Police on Monday also cleared up confusion over a rope found tied to the wreckage.
They say one of the first responding officers found it lying nearby and used it to try and move the part.
The area has since been preserved as a crime scene.
The city Medical Examiner office will be on site starting at 8 a.m. Tuesday to begin sifting through soil for potential human remains.
"I couldn't believe they just found it after so many years. It was really freaky. You know you're trying to get over it after all this time and now, boom, it's fresh," said one New Yorker.
"It's impressive that they would find it after so along. Wow. I hope it is - I hope is not some kind of a hoax or something. And I think it's good for people in the city to find some closure," said another New Yorker.
Police say the wreckage will be removed from the site once all of the sifting around it is complete. It will then be handed off to the National Transportation Safety Board or placed in a collection of historical artifacts.
Meanwhile, workers at One World Trade Center were forced to postpone raising the final section of the building's spire due to high winds Monday.
Once they're installed, the skyscraper will be the tallest structure in the country at 1,776 feet, and the third tallest in the world.
Installation of the spire began in December.
One World Trade is scheduled to open next year.