New York, NY —

More human remains have been discovered at the World Trade Center site. WNYC's Ginger Otis reports.

The tiny fragments are about 1 to 2 inches long. They were found during excavation of a street-level service road at Ground Zero.

Four other bones were recovered from the same area last week, and more than 200 other remains have been found in manholes beneath the road since October.

The medical examiner's office hopes to match DNA profiles to some of the bones that are being recovered, perhaps to identify some 40 percent of the 2,749 people killed in the Sept. 11 attack, whose families have never received remains.

None of the fragments located at Ground Zero since October - and none of the more than 700 remains found in the past year at a nearby skyscraper - has been positively identified. Officials say they'll continue searching the areas.

For WNYC, I'm Ginger Otis