NEW YORK (AP) -- Authorities now say a 5-foot part that's believed to be from a hijacked 9/11 World Trade Center jetliner came from a wing.
Police said Monday the rusted metal part from a Boeing 767 is a trailing edge flap support structure. It helps secure wing flaps that aid in regulating plane speed.
Investigators initially thought it was part of the landing gear, because both pieces have similar hydraulics.
Authorities believe the aircraft part is from one of the two hijacked planes that brought down the trade center and killed nearly 3,000 people on Sept. 11, 2001. But Boeing officials can't determine which flight.
The chief medical examiner's office says its workers will sift soil at the site for human remains starting Tuesday.