Patrolman Martin J. O'Brien

Patrolman Martin O'Brien and Patrolman Francis Mulvihill were shot and killed at approximately 2325 hours by four men believed to be part of the Dillinger Gang. The officers were patrolling a rural section of the old Gary Road when they stopped to talk with four men standing next to a car. Without warning, the suspects opened fire with machine guns, striking both officers multiple times. The suspects then fled the scene.