The remains of another victim killed at the World Trade Center during the 9/11 terror attacks have been identified, officials said Monday.

The city Medical Examiner’s office used DNA testing to identify the man, who is the 1,643rd victim to be identified from the attack that left 2,753 people missing. Officials are withholding his name.

The remains were recovered in 2013. He is the first 9/11 victim to be identified since July 2018, when 26-year-old financial worker Scott Michael Johnson was named through advanced DNA testing.

Following a dozen unsuccessful attempts to identify Johnson’s fragments that were recovered in 2001, the ME eventually used new techniques to extract DNA from the bone to match it to a sample database of DNA provided by victims and their family members.

The ME’s office is endeavoring to identify all the missing victims, although roughly 40 percent of those who died remain unidentified.