BEXAR COUNTY, Texas -- The Bexar County Sheriff’s Office Criminal Investigators have arrested an off-duty Detention Deputy and charged him with sexual assault of a child. 

Jose Nunez is a 10 year veteran detention officer with the Bexar County Sheriff’s Office.

The victim was a 4-year-old girl, and authorities said the mom is an undocumented immigrant so at first she was afraid to report what was happening. She eventually went to the fire station to report the incident.

Authorities suspect the alleged assault had been occurring for a few months. They also said there may be other victims and are encouraging others to come forward. Nunez is currently on unpaid leave and authorities believe he took advantage of the undocumented status to abuse the girl.

Nunez will not be housed in the jail he worked in and will be transferred to another facility.