New York Police have found part of the landing gear of what is believed to be one of jets flown into the World Trade Center on 11 September 2001.

Police said the five-foot piece of metal, including a clearly visible Boeing identification number, was found wedged between two New York City buildings.

It was found on Wednesday by surveyors inspecting a lower Manhattan building.

Nearly 3,000 people died in the terror attacks as planes were brought down in New York, Washington and Pennsylvania.

Five suspected al-Qaeda militants are awaiting trial for the attacks at a military tribunal at the US detention facility in Guantanamo Bay, Cuba.

The New York Police Department has secured the area behind 51 Park Place and 50 Murray Street as a crime scene.