Detective William Richard Mooney, a 45-year-old white male, was fatally shot on January 2, 1908, in Chicago, Illinois. At the time of the incident, Detective Mooney was investigating a burglary report near the intersection of Sangamon and Van Buren Streets. While taking the report, he noticed three suspicious men and asked the victim to identify them. As the men approached, Mooney directed the tallest of the trio to come closer.
When Mooney grabbed the suspect by the sleeve, the other two men fled north on Sangamon Street. Mooney fired several shots in the air to attract the attention of his fellow detectives, who were at a nearby patrol box. The detectives responded by drawing their weapons and firing at the fleeing men. One detective pursued the suspects, while the other remained with the prisoner.
During the pursuit, another shot was fired, and Mooney was struck and fell to the sidewalk. The tall suspect, revolver in hand, continued to flee north on Sangamon Street. The pursuing detective, dragging his prisoner, fired at the gunman while running. The gunman's companions also drew their revolvers and engaged in a gun battle with the detective as they continued to flee. The suspects emptied their revolvers, reloaded, and continued firing. When they reached Monroe Street, they turned west, and the detective eventually lost sight of them. A crowd gathered around the wounded Mooney, who was carried to Grace Hospital by several bystanders. Despite being conscious and able to provide a description of his assailant, Mooney succumbed to his wounds at 1:48 a.m. the following morning.
Detective Mooney's death led to an extensive investigation. The suspects involved in the shooting were identified as William Brown, Thomas McCann, and Horace Simmons. The police launched a manhunt to apprehend the suspects, who were eventually arrested. The case garnered significant attention, and the suspects faced charges related to the murder of Detective Mooney. The legal proceedings included multiple court appearances, and the suspects were ultimately convicted and sentenced for their roles in the crime.
Detective Mooney was a 16-year veteran of the Chicago Police Department and had previously survived a serious injury nine years earlier when he was struck on the head by a thief. He was survived by his wife and two sons, having lost another son a year prior to his death. Mooney's dedication to his duty and his ultimate sacrifice were honored by his colleagues and the community. His name is remembered on various memorials dedicated to fallen officers.