A convicted cop killer who was serving life behind bars when he staged a daring escape from a maximum-security prison pleaded guilty Friday to criminal charges for the breakout, reports the Associated Press .
District Attorney Andrew Wylie said $79,841 in restitution will also be sought from David Sweat for repairs to the prison, jointly with former prison worker Joyce Mitchell. She pleaded guilty to helping Sweat and his accomplice break out of Clinton Correctional Facility in northern New York on June 6.