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900 S Saginaw St
Flint MI  48502
(810) 257-3210

Image: David S Leyton
David S Leyton
Genesee County Prosecutor

David Leyton was first elected Genesee County Prosecutor in 2004. He was re-elected without opposition to his second term in 2008, third term in 2012, and fourth term in 2016.  As Prosecutor, he is the chief law enforcement officer in Genesee County.

Prior to being elected Prosecutor, David served 12 years on the Flint Township Board of Trustees, serving first as trustee and later as clerk.  Mr. Leyton is the Past President of the Prosecuting Attorney Association of Michigan. He is a member of the Board of Directors of the Weiss Advocacy Center. He is also a past President of the Genesee County Bar Association.

 On Friday nights in the late summer and fall, you can find David wearing stripes as a Michigan High School Athletic Association football official.

David and Therese have been married for 36 years. Therese is a health educator and columnist.  They have four children: Aimee (married to Alan Speck),  Andrew, Erica, and Adam.  They also have two granddaughters and a grandson.  

Tamara J. Phillips
Chief Assistant Prosecuting Attorney

Prosecutor David Leyton appointed Tamara J. Phillips to the position of Chief Assistant Prosecuting Attorney in April, 2017.  Mrs. Phillips has worked in the prosecutor’s office since 1997 and was formerly the Managing Assistant Prosecuting Attorney for the Criminal Division and the Warrant Division.  She was also a felony trial attorney prior to that. 

Image: John R Potbury
John R Potbury
Deputy Chief Assistant Prosecuting Attorney

John Potbury has served as Special Assistant Prosecuting Attorney under Prosecutor Leyton since 2005.  In April, 2017, he was promoted to Deputy Chief Assistant Prosecuting Attorney.  Born in Flint, John is a lifelong resident of Genesee County. A proud graduate of Flint Powers Catholic High School and the University of Michigan-Flint, John went on to graduate cum laude from Michigan State University College of Law. John has been actively involved in the greater Flint community for many years as a member of numerous community organizations and service clubs. His public service background includes being elected to the Flushing City Council and serving as Mayor.  John and his wife Sarah, a former elected Mt. Morris City Councilwoman, and their two boys live in Flushing along with their family dog.  They enjoy spending some of their free time as a family visiting local libraries, Flushing County Park, Crossroads Village, and vacationing in northern Michigan.

Image: Tamara S Johns
Tamara S Johns
Administrative Secretary

Prosecutor David Leyton appointed Tamara Johns to the position of Administrative Secretary in January 2005.  Prior to this appointment, she was a legal assistant at the law firm of Leyton & Kasle.  She graduated with honors in 1986 from Mott Community College with an Associate’s Degree in Applied Science, Para-Legal Technology.  She has worked as a legal assistant since 1984.  She is also a Certified Electronic Recorder having passed the state exam in October, 2013.  She has two adult children, Brad Horton, a senior at West Coast Baptist College in Lancaster, California, and Megan Horton, a Nail Technician in Grand Blanc.  She is married to Trever Johns, owner of Finish It Custom Carpentry.  They are members of Landmark Baptist Church in Clio.


David Leyton Genesee County Prosecutor 810.257.3210
Tamara J Phillips Chief Assistant Prosecutor 810.257.3210
John Potbury Deputy Chief Assistant Prosecutor 810.257.3210
Rochelle Brown Office Manager 810.257.3210
Tamara Johns Administrative Secretary 810.257.3210