TRAVERSE CITY, Mich. — A corrections officer at a jail in Michigan will spend 10 days behind bars himself after he pleaded guilty to a probation violation Tuesday morning.

Jeffrey Kassab was accused of submitting altered records of Alcoholics Anonymous meetings that he had to attend as part of his probation for a 2013 drunken driving conviction.

Authorities say Kassab, 42, showed up for work at the Leelanau County Jail in November of that year with a .24 blood alcohol reading. He was suspended with pay while the Leelanau County Sheriff’s office conducted an internal investigation. Months after he pleaded guilty to a drunken driving charge, he received a promotion to sergeant at the jail. He also received a paid suspension and returned to the job after his sentencing.

After Tuesday’s hearing, Leelanau County Sheriff Mike Borkovich told the Traverse City (Mich.) Record-Eagle his department would continue to review the case and that Kassab would be suspended without pay pending the investigation’s conclusion.

Borkovich explained the decision to promote Kassab, whom he called “a great worker” on the jail’s overnight shift, by pointing out that he tested higher than any other candidate for a sergeant’s position last year.

“He was the best, most qualified candidate. That’s the bottom line,” he said.

Kassab, who has worked at the jail for nearly a decade, will serve his sentence at a facility in a neighboring county. He is scheduled to attend a hearing as part of the internal investigation on Sept. 9.

The Traverse City (Mich.) Record-Eagle contributed to this story.