At the Cooke County District Attorney’s Office, our mission is to protect and defend the Constitution of the United States and the State of Texas, to prosecute, within the law, all felony offenses over which we have jurisdiction not merely to seek a conviction, but to see that justice is done for all.
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John Warren
DISTRICT ATTORNEY
235th
Judicial District
101 S. Dixon St., Suite
309
Gainesville, Texas 76240
TELEPHONE (940)
668-5466
FAX (940)
668-5499
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Mr Warren served as First Assistant District Attorney in Cooke County from
2015 to 2016. Prior to his service in Cooke County, John served as an
Assistant District Attorney in Dallas County from 2006 to 2014. He
received a Bachelor's degree from Texas A&M University in
2000. In 2003, he received his Juris Doctor degree and a Master of
Science degree in Personal Financial Planning
from Texas Tech
University.
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Barron Slack
First Assistant District Attorney
Mr Slack was raised in Cooke County and is a graduate of Gainesville High School. He attended Texas Tech School of Law. He served 18 years as an Assistant District Attorney in Lubbock County and has served as a special prosecutor for various Texas counties. He is married with two daughters.
Austin Caldwell
Assistant District Attorney
Mr Caldwell is a graduate of Callisburg High School. He received his Bachelor Degree from the University of Houston and his law degree from Oklahoma City University. Prior to joining the office, Austin worked for a law firm in Oklahoma City.
Aaron Carney
Investigator
Mr Carney is originally from Collinsville, TX. After high school, he attended Tarleton State University in Stephenville. He began his law enforcement career in 2006 at the Dublin Police Department as a patrol officer. He later continued his career at the Erath County Sheriff’s Office originally as a Patrol Deputy, then was later promoted to Investigator, and Sergeant Investigator. In 2013, he relocated to Cooke County and worked as a Sergeant Investigator at the Cooke County Sheriff’s Office before coming to the District Attorney’s Office in 2015.
Callie Paxton
Director of Victim Services
Information for Victims
Clerical Staff
Julie Del Rio, Legal Assistant
Kailei Klement, Legal Assistant
Hannah Carter, Legal Assistant