County Judge Joel Hale confirmed that officials accepted the letter but said no other discussion took place on the matter.
The letter, dated Sept. 19, simply states Ferrell “submits this letter to notify the county judge that I am resigning from my position on Sept. 20.” It does not include any other details.
Ferrell could not be reached for comment Monday afternoon.
The former constable and his wife are facing federal charges after being arrested in March.
Ferrell, 36, of Tatum, was arrested by FBI agents from Dallas, according to a news release from the Rusk County Sheriff's Office. He faced charges for “conspiracy to possess with intent to distribute phentermine, hydrocodone, hydromorphone, marijuana, and selling firearms to prohibited persons,” according to the release.
Ferrell's wife, Amanda Gayle Ferrell, 32, of Henderson, was arrested at her home on County Road 2127 and was charged with two counts of manufacture and delivery of a controlled substance, which is a state jail felony, according to the release.
The arrests are the result of “a lengthy investigation by the Rusk County Sheriff's Office Narcotics Division, in cooperation with FBI (High Intensity Drug Trafficking Area) Task Force,” according to a news release.
“It's always unfortunate when somebody in law enforcement is arrested for committing a criminal offense,” Chief Ron Duncan, of the Rusk County Sheriff's Office, said at the time of the arrests. “It reflects negatively on everybody else that's dedicated to the profession.”
Hale added on Monday, “I hate it for the county family, and I hate it for Ben that that has happened.”
Ferrell pleaded guilty in September to selling firearms to prohibited people. According to federal court documents, filed Sept. 4, Ferrell met with an individual at his home last January and sold him a semi-automatic assault rifle.
“I was aware that the individual was a convicted felon at the time and that, as such, he was a prohibited person under the law and that it was illegal for me to sell the firearm to him,” Ferrell writes in court documents.
He has not yet been sentenced on that charge.
Greg Waldron, who represents Ferrell, said he expects Ferrell's drug charge will be dismissed.