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Major William Lanning has served with the Office of Genesee County Sheriff for the past 21 years, with responsibilities spanning from Corrections Deputy to Investigate Services Commander.  Major Lanning currently oversees all operations of the Office of Sheriff. 


Major Lanning has developed a thorough understanding of all aspects of law enforcement, including expertise in investigations and special operations. Major Lanning has vast knowledge of all aspects of policy and protocol and strong command presence. Major Lanning has command experience in all Divisions within the Office of Genesee County Sheriff and previously served as the Lieutenant of Investigative Services, Detective Sergeant, Patrol Sergeant, and Road Patrol Deputy. 

Major Lanning has served as the lead investigator on numerous high profile cases, including homicide, sexual assault, embezzlement, public corruption, and violent crimes.  Major Lanning has worked closely with the DEA, ATF, and FBI as well as state and local agencies on multiple investigations.

Major Lanning has received numerous awards and recognition for Professional Excellence and Meritorious Service.


Office of Genesee County Sheriff
Captain William Lanning III

1002 South Saginaw Street

Flint, MI 48502

Emergency: 911

Non-Emergency: 810-257-3422

Administration: 810-257-3406

Inmate Information: 810-257-3426