On January 31, 1925, Officer John Bohlen was struck and killed by a streetcar at Humboldt Avenue and North Broadway in the Sixth District. He was struck by a northbound Broadway streetcar while waiting for a southbound streetcar. A motorman for the northbound streetcar said the car was traveling about twenty-five miles per hour when he saw Officer Bohlen standing on the track facing the away and failed to see the streetcar that struck him. Death resulted from a skull fracture and internal injuries.

Officer Bohlen walked the beat on which he was killed. Officer Bohlen was appointed a probationary patrolman on June 18, 1908 and was promoted to patrolman on June 1, 1908. Officer Bohlen was a Spanish-American War veteran and had been with the agency for 17 years. He was survived by his wife, Kate, and parents. Interred: New Bethlehem Memorial Park Cemetery.