On the 110th anniversary of the fatal shooting of fabled NYPD  Lt. Det. Joseph Petrosino, a group of Long Islanders, NYPD officers and Italian dignitaries dedicated a plaque in his honor Tuesday near the spot in Palermo, Sicily, where he was gunned down.

A trailblazing investigator who helped create the harbinger of the NYPD bomb squad, intelligence squad and canine units, Petrosino was killed while on a supposedly secret mission to Sicily to investigate gangsters with ties to New York City.  His death while on foreign assignment is still the only time an NYPD officer has died while on duty overseas, officials have said.