PCSO says Corrections Officer Yennifer Reyes was arrested on Wednesday for being sexually involved with a young female from late 2013 to early 2014.
Deputies began their investigation on Tuesday after PCSO got a report about Reyes' alleged relationship.
PCSO says they found evidence of the sexual relationship and arrested Reyes.
She was booked on one count of sexual conduct with a minor, fifteen years of age or older.
Reyes was in the process of being terminated when she resigned on Thursday; she had been with the Sheriff's Department since May 2005.