Patrolman Killion was shot and killed after interrupting a robbery in progress.
Patrolman Killion and his partner entered a store at 648 Fifth Avenue, Manhattan, and observed four men holding the store up. Patrolman Killion was shot and killed in an exchange of gunfire. Three suspects were captured by Patrolman Killion's partner and the fourth was apprehended by a patrolman that responded to the sound of shots being fired.
All four suspects were convicted of murder and executed at Sing Sing State Prison on January 9, 1936
Patrolman Killion had served with the New York City Police Department for six years and assigned to the 17th Precinct. He was survived by his wife and two daughters.