Edwin C. Shanahan, a 27-year-old white male, was a Special Agent with the FBI and became the first FBI agent killed in the line of duty on October 11, 1925, in Chicago, Illinois. Shanahan was born in Chicago in 1898 and joined the Bureau in 1920. On the day of his death, Shanahan was attempting to apprehend Martin J. Durkin, a notorious car thief who had previously wounded four police officers to avoid capture.
Shanahan and officers from the Chicago Police Department received information
from underworld sources that Durkin planned to hide a stolen automobile in a specific Chicago garage. Acting on this tip, Shanahan and the officers proceeded to the garage to wait for Durkin. When Durkin arrived and drove the stolen car into the garage, Shanahan, who was alone at the time, attempted to arrest him. Durkin, however, quickly grabbed an automatic pistol from the front seat of the car and shot Shanahan in the chest. Despite being mortally wounded, Shanahan managed to return fire, but Durkin escaped as Shanahan collapsed. Shanahan's death was almost instantaneous.
Following the murder, a manhunt ensued for Durkin, who was eventually captured and brought to justice. Durkin was sentenced to 35 years in prison for the murder of Shanahan and received an additional 15 years for stolen motor vehicle charges. The case highlighted the dangers faced by law enforcement officers and underscored the need for better coordination and support during such high-risk operations.
Shanahan's death had a significant impact on the FBI and law enforcement community, leading to increased measures to protect agents and officers in the line of duty. His sacrifice is remembered and honored by the FBI, and he is commemorated on the FBI Wall of Honor. Shanahan was buried at Mount Carmel Catholic Cemetery in Hillside, Illinois, next to his parents, Denis and Mary.