Lt. Dave Doyle began with the Sheriff's Office as a corrections officer in 1986, and was promoted to the rank of deputy sheriff in 1988. In 1993 he joined the Sheriff's Office Investigations unit, and was promoted to the rank of Investigative Sergeant in 2004, and now holds the position of Administrative Lieutenant.
Lt. Doyle graduated from Xavier University with a Bachelor of Science Degree in Criminal Justice, and is a graduate of the Southern Ohio Police Institute as well.