Authorities are investigating new allegations linking a retired FBI agent, R. Lindley DeVecchio, to another gangland-style slaying carried out by Mr. DeVecchio’s top echelon informant, Colombo capo Gregory Scarpa.

This killing is a little different, however, than the mob rub outs already charged to the gangster and his G-man associate. It involves a former abortion doctor who was shot to death in Queens on December 3, 1980, Gang Land has learned.

Sources said the Brooklyn district attorney’s office has received information that Mr. DeVecchio allegedly warned Scarpa that the ex-doctor was cooperating in a probe of the mobster.

The murder took place the same year Mr. DeVecchio officially recruited Scarpa – who reportedly broke off an earlier 13-year stint as an FBI snitch in 1975, when agents balked at forking over a $1,500 payment. Mr. De-Vecchio’s soft-sell approach to the two-timing gangster was that he would be paid well and would have to answer only to Mr. DeVecchio.

Shortly after he signed up Scarpa, Mr. DeVecchio allegedly alerted his murderous informer that Eliezer Shkolnik, 52, whose medical license had been revoked in 1976 for incompetence, was cooperating with an Internal Revenue Service probe into Scarpa’s activities, sources said.

Sources said state prosecutors obtained the latest allegation shortly after the Brooklyn district attorney, Charles Hynes, announced that a grand jury had charged the retired agent with four murders, beginning in 1984 with the slaying of Mary Bari, 31, the one-time mistress of a top Colombo family mobster.

The Shkolnik murder “isn’t the only new allegation to surface” in recent weeks, an investigative source said, declining to elaborate.

A focal point of the current investigation into Shkolnik’s murder, sources said, is a former beauty queen – Lili Dajani, Miss Israel of 1960 – who was Shkolnik’s business partner and was romantically linked to both him and Scarpa at the time of the killing.

During the 1970s, Ms. Dajani, a semi-finalist in the 1960 Miss International Beauty Pageant, worked as a nurse-receptionist at a Manhattan women’s center that the married Shkolnik ran both before and after he lost his medical license. During that period, she and Shkolnik became lovers, sources said, a relationship that contributed to his messy divorce that ended with the ex-doctor changing the name of the women’s center, placing it in Ms. Dajani’s name, and remaining on as the center’s administrator.

In 1975, Scarpa, who despite being married to one woman and living with another – longtime companion Linda Schiro – married Ms. Dajani in Las Vegas, according to a 1996 article by reporter-author Frederick Dannen in the New Yorker.

Sources said Ms. Dajani and Scarpa also had a business relationship.

“She had invested money with Scarpa. It was something that was designed to help Linda,” an investigative source said, adding that Ms. Dajani was “upset with Scarpa” about her losses.

Sources said Scarpa and crew member Joseph “Joe Brewster” DeDomenico – whom Scarpa would murder seven years later, allegedly with Mr. DeVecchio’s help – and a third cohort gunned down Shkolnik in the vestibule of his parents’ Forest Hills apartment building at 7:30 a.m.

The killers shot Shkolnik in the head, leaving behind more than $1,500 in cash he had in his pockets and the expensive gold jewelry he was wearing.

Witnesses told police they saw two men run out of the building moments after the shooting and speed away in a blue getaway car driven by a waiting accomplice. The murder is listed as unsolved, police said.

Ms. Dajani could not be reached by Gang Land. Prosecutors Michael Vecchione and Noel Downey declined to comment about their inquiry into the Shkolnik killing.

An attorney for Mr. DeVecchio, Mark Bederow, labeled the new allegations as “pure fantasy. We said it before, and we will say it again: Lin is innocent. The idea that Lin DeVecchio conspired with Greg Scarpa Sr. to murder anyone is ludicrous. It didn’t happen.”

Shkolnik’s son, Hunter, told Gang Land that a day after Mr. DeVecchio was indicted, an anonymous caller contacted him at his law office – he is an attorney in Manhattan – and implicated the retired agent in his father’s murder.

“It was a shock,” said Mr. Shkolnik, noting that the caller referred to him by name when he answered the phone, stating: “Hunter, this may be of interest to you. It’s about that FBI agent and your father’s death. He had something to do with it.”

Mr. Shkolnik had been away at college at the time his father was killed, but had seen him a few days earlier when the younger Shkolnik returned home for the Thanksgiving Day weekend.

By then, Mr. Shkolnik recalled, his father’s relationship with Ms. Dajani had soured and the elder Shkolnik was living with his parents. But the father expressed confidence that his earnings would soon increase to prior levels, telling his son: “I’m finally going to get the business back.”

A couple of months after the murder, Mr. Shkolnik recalled, detectives quickly determined that they were unlikely to solve the case. “They had hit a wall,” he said. And they strongly suggested that the Shkolnik family against trying to retrieve his father’s business from Ms. Dajani for their own sake, advice the family accepted.

“That’s what they said to us. ‘Don’t do it. You don’t want to get involved. It’s probably what got your father killed.’ Now that I’m looking back at the things that were said to us at the time. … In retrospect, they may have been right,” he said.

Meanwhile, the pending charges against Mr. DeVecchio – which include the 1990 murder of Patrick Porco and the 1992 slaying of Lorenzo “Larry” Lampesi – are on hold to permit a federal judge to determine whether the case should be tried in state or federal court.

Citing statutes that permit state indictments against federal officers to be adjudicated in federal court if the allegations stem from their jobs, Mr. DeVecchio’s lawyers have asked that the case be removed to Brooklyn Federal Court.

Judge Frederic Block has given the Brooklyn district attorney’s office until May 25 to submit court papers opposing the removal. Mr. DeVecchio’s attorneys have until June 23 for their final response.

This column and other news of organized crime will appear later today at www.ganglandnews.com.