A victim of the 9/11 terror attack has been identified in New York City, 16 years after the horrific events which shocked the world.
The man - whose name has been withheld by US officials at the request of his family - is the first victim to be identified since March 2015, more than two years ago.
The medical examiner's office in the city said advancements in DNA testing had allowed for a positive confirmation of the man's identity.
Investigators have been pulverising the remnants of those buried in the attacks to get their base DNA, and then comparing this to family members and other victims.
A total of 2,996 people died on the day of the attack, when planes hijacked by Al-Qaeda operatives crashed into the World Trade Center in New York, a wing of the Pentagon, and a field in Pennsylvania.
In New York City, the Twin Towers were hit, the structures engulfed in flames before eventually collapsing, killing more than 2,600 people.
Investigators were unable to recover scores of bodies trapped in the rubble, and the effects of heat and chemicals like jet fuel have further complicated the identification process.
There are believed to be roughly 21,900 pieces of human remains left at the site, and the efforts to return them to their families and loved ones is still ongoing.