Mario Sonny Riccobene, 60, was shot multiple times in the head and found in his car in the parking lot of a Brooklawn, New Jersey diner on the evening of January 28, 1993. The driver’s side window was shattered by a hail of bullets; his foot was pressed against the accelerator and the engine was running when he was discovered. The attack has been described as a professional, mob-style execution.

Born in Sicily and long associated with the Philadelphia crime family, Riccobene later became a government witness in the 1980s and entered the Federal Witness Protection Program. He left the program and its security before his death.

Does anyone have verifiable information about investigative leads or witnesses connected to this case?