Surveillance footage from a nearby business caught the violent encounter on tape, but police claim "technical difficulties" hampered their investigation.
A Pueblo County Sheriff's Office volunteer appears in the video to beat a man who punched his wife at an elementary school in Pueblo, Colorado, last September.
Nate Cullison, an amateur mixed martial arts competitor out of Pueblo, California, is being investigated for his role in an attack on a homeless man in Sep 2022