US

Medical examiner searches for human remains amid landing gear debris near World Trade Center

  • This Friday, April 26, 2013, photo provided by the New York City Police Department shows a piece of landing gear that authorities believe belongs to one of the airliners that crashed into the World Trade Center on Sept. 11, 2001, that was found wedged between a mosque and another building, in New York. Police say the medical examiner's office will complete a health and safety evaluation to determine whether to sift the soil around the buildings for possible human remains. (AP Photo/New York City Police Department)

    This Friday, April 26, 2013, photo provided by the New York City Police Department shows a piece of landing gear that authorities believe belongs to one of the airliners that crashed into the World Trade Center on Sept. 11, 2001, that was found wedged between a mosque and another building, in New York. Police say the medical examiner's office will complete a health and safety evaluation to determine whether to sift the soil around the buildings for possible human remains. (AP Photo/New York City Police Department)  (The Associated Press)

  • Crime scene tape and a New York City police officer block the service entrance to the site of a proposed Islamic community center in New York City, after a 5-foot-tall piece of landing gear has been discovered wedged between it and a luxury high-rise apartment building, Friday, April 26, 2013. The wreckage is believed to be from one of the hijacked planes destroyed in the Sept. 11, 2001 terrorist attacks on the World Trade Center. (AP Photo/Tom Hays)

    Crime scene tape and a New York City police officer block the service entrance to the site of a proposed Islamic community center in New York City, after a 5-foot-tall piece of landing gear has been discovered wedged between it and a luxury high-rise apartment building, Friday, April 26, 2013. The wreckage is believed to be from one of the hijacked planes destroyed in the Sept. 11, 2001 terrorist attacks on the World Trade Center. (AP Photo/Tom Hays)  (The Associated Press)

  • In this Friday, April 26, 2013, photo provided by the New York City Police Department, police investigate the space between a mosque and another building in New York where authorities believe a piece of landing gear belonging to one of the airliners that crashed into the World Trade Center on Sept. 11, 2001 was found. Police say the medical examiner's office will complete a health and safety evaluation to determine whether to sift the soil around the buildings for possible human remains. (AP Photo/New York City Police Department)

    In this Friday, April 26, 2013, photo provided by the New York City Police Department, police investigate the space between a mosque and another building in New York where authorities believe a piece of landing gear belonging to one of the airliners that crashed into the World Trade Center on Sept. 11, 2001 was found. Police say the medical examiner's office will complete a health and safety evaluation to determine whether to sift the soil around the buildings for possible human remains. (AP Photo/New York City Police Department)  (The Associated Press)

Police say the alley near the World Trade Center where landing gear believed to be from a Sept. 11 hijacked plane was found remains a crime scene until medical examiners finish looking for human remains.

On Saturday, police were guarding the alley, which was secured as a crime scene two blocks from the trade center site. Police say it will be protected until the search is completed.

Workers this week discovered a rusted piece of landing gear wedged between a luxury apartment building and a mosque that had prompted virulent national debate about Islam and freedom of speech.

Police spokesman Paul Browne says the twisted metal part includes a Boeing identification number.

The two planes hijacked by terrorists in 2001 were made by Boeing.