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The St. Mary Parish Sheriff’s Office Uniformed Patrol Section provides law enforcement service and emergency response to the unincorporated areas of St. Mary Parish except for tribal lands. The parish is divided into six districts patrolled by uniformed deputies out of headquarters in Franklin or the branch office in Morgan City. Thirty-six uniformed patrol deputies provide 24-hour coverage, seven days a week, 365 days a year. Additional operations are also managed within the structure of the Uniformed Patrol Section including community deputies who staff the St. Mary Parish Behavioral Center, deputies with the Marine Section who patrol parish waterways, and deputies who manage records and service the Sheriff’s Office information technology systems. The Sheriff’s Office also has specialized operations that are staffed by uniformed patrol deputies such as the St. Mary Parish Sheriff’s Office Special Response Team.



Sgt. Justin Morvant working a DUI Checkpoint 


Uniformed Patrol Deputies are skilled in handling a wide variety of incidents such as traffic crashes, medical emergencies, domestic violence, disturbances, thefts, damaged property, search and rescue operations, funeral escorts, burglary investigations, murder investigations, and deaths. Uniformed patrol deputies conduct preliminary investigations on these incidents and conduct many investigations from the initial stages through prosecution. Uniformed patrol deputies are responsible for the enforcement of Louisiana State Laws and St. Mary Parish Ordinances. When deputies are not working calls for service, they are patrolling to prevent criminal activity, address neighborhood concerns, and check on businesses and other areas as requested by citizens.


Uniformed Patrol Deputies are also largely responsible for enforcing traffic laws to keep drivers and pedestrians safe as they travel the US and state highways and parish roads St. Mary Parish. Uniformed Patrol Deputies work to promote safety on the roadways through investigations of traffic incidents that range from speeding to child safety restraint violations and DWIs.


The St. Mary Parish Sheriff’s Office is committed to providing valued service on every interaction with the public and we will continue to work with the community to find new ways to accomplish our goals as the demand for service continues to evolve.


Lt. Dan Wiedenboerner showing off his police cruiser to kids

Lt. Dan Wiedenboerner showing off his police cruiser





Mat Moore



Captain Mat Moore is a Morgan City native and Morgan City High School graduate. He earned his Bachelor of  General Studies degree from the University of Louisiana at Lafayette in 2010. 

Moore also obtained a commission in the Louisiana Army National Guard as a Military Police 2nd Lieutenant upon graduating in 2010, after initially enlisting in 2007. He continues to serve his state and country in the Louisiana Army National Guard as a Captain in the 773rd Military Police Battalion out of Pineville, LA.


He began his civilian Law Enforcement career in 2012 at the St. Mary Parish Sheriff's Office after graduating from the St. Mary Parish Sheriff's Office P.O.S.T. Academy as class President and also received the Top Gun award. Moore has served at the ranks of Corporal, Sergeant, Lieutenant, and Captain in the Uniformed Patrol Division.

Moore has been a member of the St. Mary Parish Sheriff's Office SRT Team since 2013 and assists Academy Staff as an instructor in Police Traffic RADAR/LIDAR, SFST & DWI Detection, Active Shooter Response, and Traffic Incident Management.

Moore was promoted to Captain and took charge of the Uniformed Patrol Division in June of 2020.