9/11 Victim Identified 12 Years Later

A man killed in the September 11, 2001, attacks in New York has become the 1,638th victim to be identified. The 49-year-old's name was not released at the request of his family. His identification was made possible through the re-testing of remains.

To this day, just 59% of the victims have been identified, mostly through DNA. No trace has been found of the remaining 41 percent, or 1,115 people, according to the medical examiner's office.

Over the years, authorities have recovered 21,906 human remains of which 63 percent have been identified.