It may have taken more than a century, but Italian police have finally figured out who killed an undercover NYPD detective in Sicily.

Giuseppe “Joe” Petrosino, known as “the Detective in the Derby,” was a pioneer in taking down organized crime back in the early 1900s and was the NYPD’s secret weapon when it came to fighting Italian mobsters.

He was dispatched to Sicily in March 1909 on a special job to investigate the Sicilian Mafia’s ties to its American counterpart the Black Hand, a group of thugs that targeted Italian-American immigrants.



American media outlets caught wind of Petrosino’s mission and leaked the details, but Petrosino refused to abort the mission. He believed the Sicilian mafia would not kill a police officer as was the case back in New York.

But he was wrong. Petrosino was waiting for an alleged informant in downtown Palermo when he was ambushed by gunmen and shot four times.

Amid reports of Petrosino’s assassination, cops rounded up every Black Hand suspect they could get their hands on, according to the March 13, 1909 article published in The Evening Post, the Post’s name until 1934.

Then-police commissioner Theodore Bingham received a cablegram that said: “Petrosino shot. Instantly killed heart of city this evening. Assassin unknown. Dies a marytr.”

The Evening Post said Petrosino, who “made a living running down criminals who came from the country of his birth,” attempted to defend himself, firing four shots from his revolver to no avail.

The case was unsolved until a police crackdown in Palermo over the weekend resulted in 95 arrests of suspected members of Mafia groups.

Police recordings caught one of the men arrested bragging that his relative was responsible for killing a top cop boasting, “My father’s uncle, whose name was Paolo Palazzotto, was responsible for the first policeman killed in Palermo. He murdered the first police officer to be killed in Palermo. He killed Joe Petrosino.”

Domenico Palazzoto, a descendant of a mob boss of the Sicilian Cosa Nostra, Vito Cascio Ferro, is facing charges with his fellow mafiosos including extortion and association in a criminal network.

Italian police said Palazzoto, 29, sealed his fate during that wiretapped conversation. “As evidence of his own more than 100-year mafia pedigree, guaranteed by his descent from Paolo Palazzotto, confirmed the murder as the work of his own relative,” the statement said, according to Bloomberg.

Petrosino’s family was both shocked and excited to hear the case finally had an ending.

“I’m happy that the Italian police and the NYPD never gave up searching for the killer of my great uncle,” Petrosino’s great nephew, Joseph, 67, told the Post.

“It’s kind of pathetic that this individual was bragging about his relative being a murderer. It’s pretty sick that someone would be proud of that. I guess it runs in the family,” he added.

As the only NYPD officer killed abroad, Petrosino is a martyr on the force. A park in Manhattan’s Little Italy and a Long Island City School were named after him to honor his commitment to the city.

His legacy has lived on within the NYPD as well — with his great-great-nephew Joseph, 28, an active member on the force. The elder Joseph worked as an assistant district attorney in Brooklyn District Attorney until he retired in 2011.