Authorities retesting human remains recovered from the World Trade Center site after the Sept. 11 attacks have identified those of a 43-year-old woman.

A spokeswoman for the New York City medical examiner's office says the woman's name won't be released at her family's request.

Some 2,750 people died at the World Trade Center in the 2001 terrorist attacks. Friday's announcement brings the number of identified victims up to 1,636.

The identification was made from remains collected before May 2002. The last time a person was identified from the original remains recovered at the site had been in October.