Remains of 1,641 victims have been identified so far.
Before this latest victim, the last time a new identification was made was in March 2015.
A victim of the 9/11 terror attacks on the World Trade Center has been identified nearly 16 later, due to new advances in DNA technology.
The city's Office of the Chief Medical Examiner had been re-testing DNA recovered in 2001 using new, more sensitive testing, reports the BBC.
The office was able to do the retesting with DNA technology acquired earlier this year, spokeswoman Julie Bolcer said.
Missouri officer killed during traffic stop, man sought
McCarthy driving his vehicle into the store parking lot shortly before Officer Michael was killed, the sergeant wrote. Michael returned fire, but it's not clear if he hit the suspect, who fled on foot after the crash, the sergeant said.
The remains - usually bone fragments - of 1,641 of the 2,753 people known to have been killed have now been positively identified.
Over time, the medical examiner's office came to use a process that involves pulverizing the fragments to extract DNA, then comparing it to the office's collection of genetic material from victims or their relatives.
In 2013, authorities sifted through truckloads of debris unearthed by construction crews who were working on rebuilding the site. Possible remains of more than 20 victims were recovered.
No full bodies were discovered after the attack, according to The Journal.
In total, the four coordinated September 11 terror attacks killed 2,996 people in NY, at the Pentagon in Arlington, Virginia, and in Shanksville, Pennsylvania, and left thousands more injured.