Lieutenant Colonel Mary J. Warnecke

Office of the Chief of Police

Picture of Lt. Col. Warnecke

Lt. Col. Mary J. Warnecke joined the Metropolitan Police Department in 1979. She has served the citizens of the City of St. Louis for 41-years, which includes 38-years of commissioned service preceded by 3-years of service in a civilian capacity.

After serving as a patrolman, Lt. Col. Warnecke was promoted to Sergeant in 1993. During that time, she supervised district officers and detectives in the Child Abuse Unit. In 1997, Lt. Col. Warnecke was promoted to the rank of Lieutenant where she served as a District Lieutenant, then as the Commander the Sex Crimes/Family Violence Unit. Lt. Col. Warnecke later served as the Director of the Police Academy during her time as Lieutenant.

Lt. Col. Warnecke was promoted to the rank of Captain in 2003 and commanded multiple districts as well as the Special Operations Division until she was promoted to the rank of Major in 2017. Upon this promotion, Lt. Col. Warnecke commanded the Bureau of Investigative Services, which includes the Homicide, the St. Louis Regional Bomb and Arson Unit, Sex Crimes, Child Abuse, Domestic Abuse Response Team (DART), and Cyber Crimes. On August 21st, 2020, Lt. Col. Warnecke was promoted to the rank of Lieutenant Colonel and she served as the Commander of the Bureau of Community Policing until October 2021, when she was assigned to the Office of the Chief of Police.

In addition to her investigative/administrative duties, Lt. Col. Warnecke developed the first Family Violence Unit for the St. Louis Police Department and was the co-founder of the St. Louis Family Violence Council. She served on the Board of the St. Louis Area Major Case Squad and on the Board for the Women’s Safe House. Lt. Col. Warnecke also established the Department’s Crisis Intervention Team (CIT) along with our first Officer Wellness Unit.

Lt. Col. Warnecke is a FOCUS Graduate of Leadership St. Louis. She also has an Associate’s degree in Criminal Investigations from Florissant Valley Community College and a Bachelor’s degree in Business Management from Webster University.

Office of the Chief of Police