sentences:  Detectives arrested Bobby Lee Mayberry, William Kestner and John Miller, who had been casing the hotel for weeks and took note of Adamucci's propensity for greeting guests as they entered the hotel's opulent lobby.Witnesses stated that the fatal shot occurred when Adamucci, angered at Mayberry prodding him toward the office and safe, pushed at Mayberry's arm, causing the pistol to fire a single shot that pierced the businessman's chest.Investigators later spoke to a bartender at a nearby lounge that remembered the trio, who as he recalled ordered unusual drinks, and alleged the men met frequently in the bar while planning the botched robbery.