HAUPPAUGE, N.Y. — A woman whose remains were among discoveries that became known as the Gilgo Beach killings have been identified after 27 years, authorities said Friday, disclosing the latest in a series of recent revelations about the long-cold case.

Known until now to the public only as “Jane Doe No. 7,” she was Karen Vergata, 34, Suffolk County District Attorney Ray Tierney told a news conference.

Her family last heard from her on Valentine’s Day in 1996, when she called her father on his birthday, according to court papers he filed in 2015 seeking to have her declared presumptively dead.

A picture of Karen Vergata is displayed at a news conference Friday in Hauppauge, New York, where the identity of a victim called “Jane Doe No. 7” was announced. John Minchillo/Associated Press

The filing lays out years of relatives’ and attorneys’ efforts to find her and says Suffolk County police contacted the family as far back as 1997 about an unidentified woman’s death. It was not immediately clear whether that woman was indeed Vergata, whose then-unidentified remains had been found the prior year.

Tierney credited a recent reinvestigation and new DNA sampling with finally establishing who she was. Yet much remains unclear about the investigative turns of a case that bedeviled detectives for over a decade and was beset by clashes among law enforcement agencies and changes in their leadership.

Friday’s development was part of a reinvestigation that, last month, spurred the first arrest in connection with the long-unsolved string of killings of 10 people whose remains were found over a decade ago along a coastal parkway in Gilgo Beach on New York’s Long Island.

But it is unclear whether Vergata’s death might ever be tied to the ongoing case against Rex Heuermann, an architect who has been charged with three of the killings and named the prime suspect in a fourth. Tierney declined to comment on “what if any, suspects” were developed in Vergata’s death.

Some of Vergata’s remains were discovered in 1996 on Fire Island. More of her bones were found in 2011 near Gilgo Beach, more than 20 miles west of the original location.

A woman with a “troubled lifestyle,” in the words of father Dominic Vergata, she was living in a rented room in Manhattan’s then-gritty Hell’s Kitchen neighborhood.

Child-welfare officials had taken her two sons from her, and they had been adopted by a foster mother. She had not seen the young boys since 1992, but she visited her father and brother frequently, her father said in sworn statements in the court proceeding that sought to have her declared legally dead.

Karen Vergata had been arrested numerous times, according to documents in the court papers, which don’t specify the charges or outcomes. Tierney said investigators believe she was working as an escort. Most of the other victims in the Gilgo Beach killings also were sex workers.

Vergata was behind bars again when she called her father for what would be the last time on Feb. 14, 1996, seeming “very troubled,” he said.

“As the year began to progress, and no one in the family had heard from Karen, nor had been able to make contact with her, I became increasingly worried,” he added.

The family learned she had never tried to reclaim bail money she had posted for a friend before February 1996, a police officer who frequently saw her around her neighborhood had not caught sight of her since then, and she’d missed a March 1996 court date, the father’s court filing said.

Tierney said Friday that no missing person report was filed when Vergata disappeared. But her father had said he tried to file a missing persons report with the New York Police Department in 1996 but was told he could not. A message seeking comment was left with the NYPD.

The family heard the next year, from a Suffolk County detective, that an unidentified woman’s body had been found, the father said. He said relatives gave DNA samples but were told they did not match.

Over the ensuing years, the family and attorneys canvassed law enforcement and social services agencies in the New York metropolitan area and hired a private investigator, according to the court filing. Yet they turned up no sign of her.

The investigator, Jacqueline Buda-Moss, declined Friday to detail her search for Vergata but said she “determined that there were no records that she was still alive.”

Vergata’s father died in December, according to an obituary.

A new investigative task force, formed last year to investigate the Gilgo Beach killings, developed a DNA profile of the woman whom investigators called Jane Doe No. 7, Tierney said. Then the FBI used genetic genealogy techniques to identify her tentatively as Vergata and used a relative’s DNA to cement the identification in October, he said.

“It’s important that we remember and honor not only Ms. Vergata but all the victims on Gilgo Beach,” the prosecutor said. He declined to answer any questions at the news conference.

Tierney said authorities held off releasing Vergata’s name while contacting her relatives and furthering their investigation, which led last month to Heuermann’s arrest in the deaths of Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello. Prosecutors say they also are working to charge him with the death of a fourth woman, Maureen Brainard-Barnes, but they have not yet done so.

Heuermann has pleaded not guilty, and his lawyer says the 59-year-old denies killing anyone.

Authorities have said he is unlikely to be responsible for all the deaths.

The case first drew headlines in 2010, when police began searching for a missing woman named Shannan Gilbert near Gilgo Beach. Instead, they discovered 10 sets of remains of other people, including eight women, one man, and a toddler.

Gilbert’s body was found in December 2011 in a marsh about 3 miles from the other 10 sets of remains. Investigators have found she drowned accidentally; her relatives have long disputed that determination.