evidence: As of September 7, 2021, 1,647 of 2,753 WTC victims' remains have been positively identified, according to the medical examiner's office. [...] August 7, 2017 - The New York City medical examiner's office announces that the remains of a man killed at the World Trade Center are positively identified due to more sophisticated DNA testing being available. September 7, 2021 - The remains of two victims are identified by the New York City medical examiner's office through DNA testing.