One of the victims of the Sept. 11, 2001, terrorist attack at the World Trade Center was identified Thursday, after a DNA sample of human remains was re-tested, the New York Office of Chief Medical Examiner said.

Matthew David Yarnell, who was 26 years old when he died, was identified after DNA samples of human remains recovered during the recovery effort in 2001 and 2002 were re-tested, officials said.

Mr. Yarnell, of Jersey City, N.J., worked as an assistant vice president for Fiduciary Trust Co. He is the 1,640th victim in the attack to be identified.

To date, of the 2,753 people reporting missing in the attack, remains of 1,113 were never found. Death certificates have been issued for all of those reported missing.