NEW YORK (AP) — The New York City medical examiner's office says an ongoing retesting of remains recovered from the World Trade Center site has resulted in the identification of 31-year-old Belgian man killed in the Sept. 11 attacks.

Authorities on Tuesday identified the man as Patrice Braut. He had been working for professional services firm Marsh & McLennan Companies.

Braut, of Brussels, was only person from Belgium killed in the attacks. The medical examiner's office said his remains were found in the original recovery effort between 2001 and 2002.

Braut is the 1,639th person identified by the medical examiner's office. A total of 2,753 people were reported killed at the trade center.

Braut's mother, Paola, was among those marking the anniversary at the site earlier this month.