On March 21, 1995, Robert Sarre Leslie, 38, was killed during an armed robbery at a Montclair, New Jersey, post office. The assailant, identified as a former postal employee, entered the building, ordered the five people inside to lie on the floor, and then shot them at close range with a 9-millimeter handgun.

Leslie was a customer and one of four people who died; two postal workers, Ernest Spruill and Stanley Walensky, and another customer, George Lomaga, were also killed. A fifth victim, David Grossman, was seriously injured but survived.

The attacker was arrested the next day, confessed to the robbery and murders, and later received four consecutive life terms without parole.