FLORENCE, Ala. (AP) — An arrest warrant has been issued for a jail official who disappeared while escorting a prisoner last week in Alabama.

Lauderdale County Sheriff Rick Singleton said a warrant was issued for the official’s arrest for permitting or assisting in an escape. Singleton said neither the inmate nor the official have been found.

The inmate, Casey Cole White, 38, was scheduled for a trial next month on a capital murder charge.

Vicky White, the assistant director of corrections at the facility, told co-workers she was taking the inmate to the courthouse for a mental health evaluation on Friday. The two then disappeared.

“We consider both of them dangerous and in all probability both of them are armed,” U.S. Marshal Marty Keely said at a Monday press conference.

The U.S. Marshals Service said Sunday that it is offering up to $10,000 for information about an escaped inmate and a “missing and endangered” correctional officer who disappeared Friday after the two left a jail in north Alabama.

The inmate and assistant director of corrections Vicky White, 56, left the Lauderdale County Detention Center on Friday morning to go to a nearby courthouse, the sheriff’s office said in a Facebook post Saturday. Investigators said the two are not related.

“Casey White is believed to be a serious threat to the corrections officer and the public,” the U.S. marshal for northern Alabama, Marty Keely, said in a statement Sunday.

While in state prison for other crimes in 2020, Casey confessed to the 2015 stabbing death of Connie Ridgeway, WHNT-TV reported.

Vicky White has been with the department 16 years. At a news conference Friday, Singleton said she was armed when she left the jail with the inmate and headed to the courthouse for what she said was a mental health evaluation for Casey White. She was alone with the inmate, which the sheriff said violated department policy.

“Our policy is for any inmate with those kinds of charges to have two sworn deputies escort them. And that did not happen,” Singleton said.

Singleton also said there was no mental health evaluation for the inmate scheduled at the courthouse.

The vehicle the officer and the inmate were in when they left the detention center was found at a nearby shopping center parking lot, according to the sheriff’s office.

Vicky White also told co-workers she had a doctor’s appointment scheduled, which was confirmed but the office said the deputy never showed, the sheriff said. Officials said no one realized the two were missing until about six hours after they left the jail. Deputies tried to contact Vicky White but her phone repeatedly went to voicemail.

Singleton said his department was “aggressively investigating” the incident and would be looking into previous interaction between the two to “see if something else was going on.” Singleton told news outlets that Vicky White had turned in her retirement papers the day before she went missing.

The sheriff told AL.com on Sunday that there were no new developments in the investigation. The Associated Press called the sheriff’s office, but a phone message there said the office was closed Sunday.

The Marshals Service said Casey is 6 feet, 9 inches (2.06 meters) tall and weighs about 260 pounds (118 kilograms). He has brown hair and hazel eyes.

The Marshals Service said people with information about Casey White’s location or Vicky White’s disappearance can call the service at 1-800-336-0102. Anonymous tips may also be submitted through the U.S. Marshals Tip App.