Smith County Assistant Civil District Attorney Stan Springerley said Constable Jackson's ability to serve has "now become compromised".
"There's a criminal and then there's also a potential civil case which would be in the public's interest because the elected official has been indicted," he said.
Thursday, a Smith County Grand Jury handed down 10 indictments against Jackson: seven for tampering with government documents, and three for sexual harassment.
A DPS investigation into Jackson's private security business began earlier this year after several deputy constables were reported working for Jackson in county uniform, possibly on the county clock.
"There is a grounds for removal of office based on official misconduct," said Springerley. "Official misconduct is not the same thing as criminal conduct."
Springerley said Jackson is still constable and can carry out his official functions. He said a petition would have to be filed with district court in a civil case for a judge to remove him from office.
"If no one files a petition, you'd have to wait until the conclusion of the criminal case," he said. If criminally convicted, Jackson would be automatically removed from office.
Until then, Smith County Judge Joel Baker said his hands are tied.
"The commissioners at this point have no authority to take any action. If he's unable to perform the duties of office, that's something the taxpayers will have to take up with Constable Jackson," said Baker.
A representative with Smith County Jail said, in most cases, individuals released on bond are not allowed to possess firearms. We called Jackson's precinct office, Tuesday, to see if he was still on patrol. He was not available for a comment. An employee, who did not want to be identified, said, quote: "We will keep working until someone tells us to stop."