The debris of 9/11 incident is located at Fresh Kills parkland of Staten Island and when observed by a anthropologists, they have found some remains of 9/11 incident.
To authenticate those remains, experts were called to identify and check those samples. As per the New York City Medical Examiner, these possible remains were found buried under debris and the excavation materials around Ground Zero.
In world trade Tower crash almost 2800 people died but out of those only 1600( approx) people were identified. The remaining people were unidentified. So officials told that these remains might be of those victims who remained unidentified.
Confirmed report about this has not been given and those remains were sent to lab for further testing and if possible DNA testing will also be carried out if these remains were of human.