LITTLE ROCK, Ark. — A convicted killer who disappeared from an Arkansas prison has been found hiding on its roof.

Arkansas Department of Corrections spokeswoman Dina Tyler said authorities found inmate Calvin Adams, 49, on Tuesday hiding underneath a large ventilation hood on the roof of the East Arkansas Regional Unit in Brickeys, about 110 miles east of Little Rock.

Tyler said Adams had apparently been hiding on the roof since he went missing early Monday. She says he managed to climb onto the roof but was stranded because there was nowhere else to go.

She says he will be moved to a maximum security area of the prison.

Adams is serving a life sentence without parole for a 1995 killing.

He also escaped from prison in 2009, Tyler previously confirmed.

Calvin Adams, the convicted murderer who escaped from prison in 2009 while wearing a guard uniform has escaped again. Arkansas Department of Corrections via AP

He was confirmed missing Monday after a search of the 1,650-inmate prison.

On May 29, 2009, Adams and Jeffrey Grinder, both serving life without parole for capital murder, walked out of the Cummins Unit, southeast of Little Rock, wearing guard uniforms and drove away in a car that was left for them in the prison's parking lot. They were arrested in New York state four days later.

Adams was convicted of capital murder in 1995 in the kidnapping and shooting death the year earlier of 25-year-old Richard Austin. Austin's wife was wounded and walked for more than a mile for help.

Adams has had several disciplinary violations since May 2018, including possession of contraband and lying to a staff member in January. His record also lists an escape violation in January, but Tyler said that was for being where he wasn't supposed to and not an escape from the facility.

Adams and Grinder were sentenced to an additional six years in prison after pleading guilty to the 2009 escape. Six guards were fired and another was disciplined. Inmates also stopped sewing guard uniforms at the Cummins unit. Prison officials at the time said it appeared the inmates received no help from correction officers.