Another person who died in the 2001 World Trade Center attack has been identified.

The city medical examiner's office said Monday that retesting has led to the identification of remains as that of a 49-year-old man who died. His name was withheld at his family's request.

Some 2,753 people died in the attacks on the trade center. The total number identified is now 1,638.

Officials have been able to make new identifications from time to time.

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