A former Lewisville police officer is charged with official oppression and sexual assault for alleged inappropriate conduct with a citizen while on duty, according to a Friday press release.
Filemon Perez worked as a patrol officer for the Lewisville Police Department since May 2023.
Lewisville investigators reported receiving a report about Perez's alleged conduct during the week of Thanksgiving.
The release states the department immediately launched an internal investigation and a criminal investigation, working alongside the Texas Rangers.
Perez resigned on Dec. 3 after learning he would be terminated. Investigators obtained warrants for his arrest the following day.
The release states that Perez only had one previous disciplinary action on his record: A written reprimand in September 2024 for failing to activate his body-worn camera during a traffic stop.
Chief Rollins Brooks said in the release that the department will not share further information because the criminal investigation is ongoing.
This incident is unrelated to a recent internal affairs investigation involving .
Perez was not among the group of officers who were disciplined following that investigation, according to the press release.