WABC

 A part of a landing gear, apparently from one of the commercial airliners destroyed on September 11, 2001, has been discovered near Ground Zero.

The part was wedged between the rear of 51 Park Place and the rear of the building behind it, 50 Murray Street, in lower Manhattan, police say.

The NYPD is securing the location as it would a crime scene, documenting it photographically and restricting access until the Office of the Chief Medical Examiner completes its health and safety evaluation protocol.

A decision will then be made concerning sifting the soil for possible human remains. The aircraft part will not be removed until the process is completed, at which point it will secured by the NYPD Property Clerk. The part includes a clearly visible Boeing identification number. The investigation began after surveyors hired by the property owner who were inspecting the rear of 51 Park Place on Wednesday called 911 at approximately 11 a.m. to report what they identified as apparent damaged machinery behind the building there.

The proposed Ground Zero Mosque is called the Park51 development (previously called Cordoba House) and is at 45-51 Park Place.

UPDATE
ABC News confirmed the building is a mosque without referring to the controversy over the Ground Zero Mosque.

Others blogging:

Pamela Geller, The Jawa Report, Gothamist, CBS Boston and Business Insider