According the Montgomery County District Attorney, 45-year-old James Charles Patrick sexually abused the then-10-year-old girl in 2000.
Authorities say Patrick admitted to the alleged conduct when the victim's mother confronted him during a therapy session in 2016.
Patrick worked for the Montgomery County Precinct 2 Constable's Office, the Willis Police Department and the Montgomery County Precinct 1 Constable's Office from 1996 until 2012, when he left law enforcement to become a minister.
At one point, Patrick worked as a school resource officer for Willis ISD.
Anybody with additional information or concerns should contact Montgomery County Crime Stoppers at 1-800-392-7867.