LOUISVILLE, Ky. (WDRB) -- Metro Corrections Director Mark Bolton is taking an indefinite leave of absence for medical reasons. 

In a news release Friday afternoon, Bolton said he is dealing with chronic knee problems.

"I have undergone multiple knee surgeries and bi-lateral full knee replacements," Bolton said. "These procedures, while improving my mobility, have begun to deteriorate and have become increasingly challenging."

Bolton, who has been director of the jail since 2008, said he looks forward to returning once he's medially cleared.

He has been embroiled in controversy for months as Louisville's jail battles overcrowding issues, rising drug arrests and numerous other problems. Back in May, 87 percent of FOP members who voted said they had no confidence in Bolton.

Also Friday afternoon, Bolton announced he's reopening the overflow jail above LMPD Headquarters, which housed hundreds of overflow inmates earlier this year.

"I will continue to exercise sound correctional judgement to operate this jail for the safety and security of the men and women of Metro Corrections and inmates committed to our custody," Bolton said. "I will continue to work with every interested partner on solutions to overcrowding."

Chief of Staff Dwayne Clark will be in charge of Metro Corrections while Bolton is on leave, according to Dotson.

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