A former Dawson County Sheriff’s Office detention officer who resigned last month after allegations of inappropriate conduct with a female inmate was arrested by investigators on Tuesday.

A warrant was issued for the arrest of Luciano Pablo Betancourt on Sept. 4 for the felony offense of violation of oath by a public officer, which carries a potential sentence of between one and five years behind bars.

Sheriff Jeff Johnson said that a recent drug investigation had led to a former inmate alleging she had been involved in a romantic relationship with then-detention officer Betancourt, 26, while she was incarcerated.

As a result of the Aug. 10 allegations, the information was forwarded to the Office of Professional Standards for review and subsequent initiation of an internal affairs investigation, Johnson said. Betancourt was placed on administrative leave Aug. 13 pending the outcome of an internal investigation and criminal investigation.

Betancourt resigned Aug. 14.

“Sheriff’s office investigators conducted the criminal investigation,” Johnson said. “It is believed that Betancourt did engage in a romantic relationship as the suspect had previously admitted.”

The woman who made the allegations, April Finnegan, 31, was most recently arrested July 30 on felony probation violations. She was also arrested April 6 of this year and found guilty of possession of methamphetamine, according to court records.

“As we have always done, we will continue to hold ourselves and our staff accountable for their actions,” Johnson said. “Whenever issues are identified, we will address them appropriately. Obviously there is no excuse for this type of behavior.

“It is my hope, that every young detention officer will use this as an example to stop and think before potentially making life-altering decisions.”

This story will be updated.