On Wednesday, plane landing gear, thought to be a part of one of the jets involved in the September 11, 2001 attacks was found wedged between an apartment building and the proposed Ground Zero Mosque in lower Manhattan, according to police.

Deputy Commissioner Paul Browne said that the debris was stuck between the back of 51 Park Place and the rear of 50 Murray Street.

“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, after which a decision will be made concerning sifting the soil for possible human remains,” Browne said in a statement. “The aircraft part will not be removed until the process is completed, at which point it will secured by the NYPD Property Clerk.”

According to Browne, the debris has a clearly visible Boeing identification number and was found by surveyors who were hired by the owners of the property.

“We are cooperating fully with the appropriate authorities to make sure this piece of evidence is removed with care as quickly and effectively as possible,” said Sharif El-Gamal, the president of Soho Properties.

USA Today adds, “The odds of it entering that space at exactly that angle that would permit it to squeeze in there … it had to come in at almost precisely the right angle,” a police spokesman told The New York Times. Investigators are considering the possibility that it was deliberately stuck in the spot, CNN reports.

“We are also looking into a possibility it was lowered by a rope,” said NYPD commissioner Raymond Kelly, who noted that some rope seemed to be wrapped up in the landing gear.