More than 11 years after the September 11th terrorist attacks, a new piece of suspected wreckage has been discovered in New York.
Police say a piece of a landing gear from a jetliner was found wedged in an 18 inch space between two-buildings near ground zero.
The part was found Wednesday by surveyors hired by a property owner.
The National Transportation Safety Board will now try and determine which plane the part came from.
"As you get closer, on the part, you can see the serial number and you see the word, "Boeing," before that serial number. We can't say with certainty what that part is, but the assumption is, it's part of a landing gear from one of the 9/11 aircraft," said NYPD Commissioner, Ray Kelly.
The piece of gear was found near 51 park place, which is the location of a proposed Islamic community center.
"If you see how confined this space is, and you realize the chaos that existed on this street, I think it's understandable. It's not that surprising," said Kelly.
"It's very, very confined and no construction work went on, or no clean up went on in this 18 inch space between the two buildings" after the attacks.
Even so, he said investigators are looking at all possibilities, including whether the part was intentionally placed between the two buildings.
"We are also looking into a possibility it was lowered by a rope," Kelly said, adding that a piece of rope appeared to be intertwined with the part.
But Kelly said an initial survey found no marks on the walls between the two buildings consistent with such an object being lowered. He also it appears that there is a break in the rope and that it came down from the roof on top of the plane part.
National Transportation Safety Board investigators will determine whether the part is from either United Airlines Flight 175 or American Airlines Flight 11, which hit the twin towers, he said.
American Airlines and United Airlines declined to comment.
Boeing spokesman John Dern confirmed the company was asked to "examine the images to see what can be determined."
The part was discovered Wednesday by surveyors hired by a property owner. They called 911 to report that they'd found "apparently damaged machinery," police said.