G-MAN BLOOD MONEY- MOB CASH FOR KILLINGS

Rogue FBI top gun Lindley DeVecchio allegedly raked in hundreds of thousands of dollars in bribes from a murderous Mafia chieftain in exchange for selling him federal secrets and helping participate in at least four gangland assassinations, The Post has learned.

Exposing one of the worst corruption scandals in U.S. history, investigators from the office of Brooklyn DA Charles Hynes have unearthed a mountain of shocking new evidence – including witnesses from both sides of the law – unmasking DeVecchio’s unholy alliance with fearsome Colombo crime family acting boss Gregory Scarpa Sr., who was known inside the Mafia as “The Grim Reaper.”

An indictment against DeVecchio is expected to be unsealed as early as today and the retired G-man is expected to surrender. For more than a decade, DeVecchio – a supervisory special agent in charge of the Colombo family squad – allegedly served as a mole enabling Scarpa’s brutal empire to eliminate government informants in their ranks, competitors trying to poach their territory and anyone who was a possible threat to his faction during the infamous Colombo wars.

In one vicious execution, DeVecchio allegedly called Scarpa “in a panic” and ordered him to kill Patrick Porco, 18, after learning from his agents in the FBI’s Colombo squad that Porco had been hauled into the 62nd Precinct for questioning on a murder.

“You have to kill him,” DeVecchio told his mob crony.

The evidence against DeVecchio in three other murders is just as startling:

* After beautiful Mary Bari was lured to her execution – partly because DeVecchio said she was a rat – DeVecchio then voiced his amazement that the body of Colombo big Alphonse “Allie Boy” Persico’s former girlfriend was dumped on a street so close to Scarpa’s Bensonhurst home.

“You got some pair of balls,” DeVecchio told Scarpa, sources said, describing an account from a new witness who testified before the grand jury.

The ravishing Bari showed up for a job interview at a Scarpa-connected club wearing a halter top and high heels and Scarpa greeted her initially with a playful hug around her head and then started squeezing her down to the floor where she was shot three times, including once behind the ear – a Scarpa trademark – to ensure she was dead.

“They dumped her on the street like the garbage,” one investigator said.

* DeVecchio allegedly used his FBI squad to track the movements of a Scarpa rival, Lorenzo Lampasi, and provided Scarpa with the FBI’s insight of him in order for Scarpa’s hit team to best catch him by surprise.

And they did – easily stepping up to Lampasi, just as DeVecchio had predicted, after Lampasi exited his car on May 1992 to lock a gate behind him outside his Brooklyn home.

* It was DeVecchio who allegedly instructed Scarpa to whack another of his disloyal underlings, Joseph DeDomenico, after DeVecchio learned from his FBI organized crime investigators that DeDomenico was pulling off burglaries behind Scarpa’s back.

The FBI supervisor believed DeDomenico had to go – after all he was not “kicking up” any profits to Scarpa. He was killed inside his Buick Regal on Sept. 17, 1987.

Law enforcement officials familiar with DeVecchio’s murder case and the separate case involving two retired NYPD detectives dubbed the “Mafia Cops” – also largely unmasked by Hynes’ investigators – say DeVecchio is a “more horrendous instance of corruption.”

“DeVecchio was a boss, a supervisor,” one source explained. “He was not just some detective, or two. You don’t see cases with federal law enforcement officials in position with the ability to cover up because they are the head of a squad or unit.”

“He was getting the intelligence – and using it to kill people.”

And his motives: greed and adulation from his bosses.

He was allegedly paid hundreds of thousands of dollars from the Colombo crime family – often in cash stuffed in envelopes – and was so brazen he even pocketed money the feds had earmarked for Scarpa as payment for being an informant.

That money totaled more than $60,000, witnesses have told the DA.

DeVecchio’s shocking indictment came after nearly four decades of criminal activity. Scarpa himself became a secret informant in the 1960s, working for the FBI and acting as a double agent inside in the Colombo Crime Family, ensuring he had an “insurance policy” against prosecution.

At the time, Scarpa – known as a ruthless hood who enjoyed killing – was also a flashy dresser who often carried a $5,000 wad of cash, with homes on Sutton Place, Las Vegas and in Brooklyn and Staten Island.

A rising star in the Colombo family, Scarpa would years later align himself with the faction run by mob boss Carmine Persico when a war broke out with a faction headed by Vic Orena, who refused to give up the family’s reins to Persico’s son, “Allie Boy.”

By the 1970s, Scarpa was a top capo operating a Bensonhurst crew and arrested numerous times on weapons charges, assault, fencing hijacked liquor, bookmaking and loan-sharking, but barely spent time in jail.

Around 1980, DeVecchio took over the Colombo FBI squad and “re-activated” Scarpa as a mole. He used him virtually up until the time Scarpa went to jail and died of AIDS, and DeVecchio’s alleged wrongdoing surfaced.

Scarpa’s son, Gregory Jr., tried to blow the whistle on DeVecchio, and subsequent congressional inquiry into the matter was handed off to Hynes in February 2005.

The DA initially probed the long-running allegation that DeVecchio pulled a FBI surveillance team off Nicholas Grancio so that Scarpa could whack him. New evidence shows Scarpa had a police scanner with a secret FBI frequency and heard when the FBI agents were pulled. It also shows DeVecchio was not involved.

But that inquiry led to DeVecchio’s indictment in the four other murders.

But during the turbulent Sixties, Scarpa seemed “protected” from law enforcement – apparently because of his purported role in helping the FBI twice solve civil rights slayings in the South – including the 1964 murders of three civil-rights workers in Mississippi.

In another bombshell, sources say Hynes’ probers have located a close associate of Scarpa, who told them he traveled with Scarpa to Mississippi on the two missions and independently confirmed Scarpa’s incredible role.

By 1986, at the age of 58, Scarpa, was the father of five children by his wife and a mistress. But he contracted AIDS during an emergency surgery for a bleeding ulcer and received a pint of blood from a member of his crew. By then, his Colombo Crime Family was roiled in an internal war that left a dozen bodies across the city.

In 1994, Scarpa died at age 66 from AIDS in prison – just as his secret life as an FBI mole surfaced.

His son, Gregory Jr., also a convicted mobster, tried to prove that DeVecchio was dirty – but DeVecchio survived several federal inquiries.