On Saturday, October 23, 1971, at approximately 10:40 p.m., Montgomery County Police officers were called to the Manor Country Club in the 14900 block of Carrolton Rd. in Rockville, MD, after witnesses reported a man lying face down in the southeast parking lot. Officers arrived at the scene and located Captain Hall suffering from a gunshot wound. Hall was transported to an area hospital where he succumbed to his injuries on October 26, 1971. Investigators believe that Hall interrupted a residential burglary in progress.
In October of 2021, the 50th anniversary of Captain Hall’s homicide, detectives from the Cold Case Unit decided to review the case with a fresh set of eyes. For almost a year, Detective K. Leggett and Corporal L. Killen of the Cold Case Unit, combed through case files, recordings, and interviewed witnesses. Through the course of their investigation, Leggett and Killen narrowed in on one person, Larry David Becker. In 1973 Becker was interviewed by investigators but had not been labeled a suspect.