NEW YORK — Three 9/11 victims’ remains have newly been identified, officials said this week, as evolving DNA technology keeps making gradual gains in the nearly quarter-century-long effort to return the remains of the dead to their loved ones.

New York City officials announced Thursday they had identified remains of Ryan D. Fitzgerald, a 26-year-old currency trader; Barbara A. Keating, a 72-year-old retired nonprofit executive; and another woman whose name authorities kept private at her family's request.

The three already were among the thousands of people long known to have died in the al-Qaida hijacked-plane attacks of Sept. 11, 2001 , and long listed among the names on the National Sept. 11 Memorial in New York City. But these families, like many others, never previously knew o

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