The Pentagon has released a report saying partial remains of some September 11th victims that could not be identified were sent to a landfill.
The report refers to some incinerated remains of those killed at the Pentagon and in United Airlines Flight 93, which crashed in Shanksville, Pa.
The number of victims involved is unclear.
According to the report, partial remains were cremated, then given to a biomedical waste disposal contractor, who incinerated them and took them to a landfill.
Pentagon officials say it should not have happened.
The report was conducted by an independent committee asked to examine practices at the military's mortuary in Dover, Delaware, where the remains of fallen troops are taken.
The committee was formed after an investigation revealed mismanagement at the facility.
In response, the group World Trade Center Families for Proper Burial said a protocol needs to be put in place to prevent any further disrespect for those killed in the terror attacks.
The group said in a statement, "What was done flies in the face of human kindness and most religious commitments."
The White House press secretary also expressed that the president was "deeply concerned," and released a statement that read in part, "The president has been briefed on the independent review of Dover Port Mortuary and strongly supports the Pentagon’s efforts to make needed systemic structural changes so that these types of incidents never happen again. The United States has a solemn obligation to compassionately and professionally care for fallen service members and their families, and those we tragically lost on 9/11."
This comes as information on 39,321 uniformed officers and civilian members of the New York City Police Department who worked at the World Trade Center was given to the Mount Sinai School of Medicine.
Mayor Michael Bloomberg handed over the information on the NYPD members' job titles, ages, races and genders yesterday.
Mount Sinai is treating the first responders and the Patrolmen's Benevolent Association wants to build a case with this information to get cancer on the list of eligible illnesses covered by the Zadroga Act.