HUNT COUNTY (CBSDFW.COM) – There’s nothing unusual about law enforcement officials investigating a suspected drug ring, but officials in Hunt County soon learned the illegal enterprise under the microscope was as being run out of their own jail.

The investigation began in April when Greenville police officers arrested Bobby Evens on charges of Delivery of a Controlled Substance, Violation of Parole and Child Endangerment.

READ MORE: Wrong Way Crash On I-30 Kills At Least One In Fort Worth

After Evens was booked into jail a corrections employee noticed the man was having a lot of interaction with another Hunt County Corrections employee. That guard was Evens’s estranged wife, Veda Evens.

Hunt County Sheriff’s Office officials began watching the pair and monitoring Evens’s mail and phone calls. The surveillance led deputies to believe there was illegal activity happening, from behind bars.

“Based on the intelligence gathered, specially trained corrections employees suspected that Evens was continuing his suspected narcotics trafficking organization out of our jail,” said Hunt County Sheriff Randy Meeks.

READ MORE: Plumber Finds Cache Of Money Behind Loose Toilet In Wall At Joel Osteen's Lakewood Mega-Church

Greenville police and federal authorities were called into the investigation, which ended Wednesday with the arrest of some 20 people from across Hunt County.

“Whether it is a known drug dealer or one of my own employees, I will never give up this ongoing battle to combat illegal drugs in Hunt County,” Meeks said, in a press release issued Wednesday.

Hunt County officials said Veda Evens is no longer a Hunt County jailer and at no point was assigned as her estranged husband’s guard. “She’d been there about nine months,” said Meeks. “She was terminated on a different matter about three months ago.”

MORE NEWS: 4 Interceptions Including A Pick 6 Help Deliver 27-17 Victory For Cowboys Over Saints

Both are among the suspects facing charges associated with the suspected drug ring. Meeks said Veda Evens arrest means, “She’s being booked into the jail where she used to work.”