Patrick M. Walker, 44, was serving a life sentence for first-degree murder when he escaped Friday from an Oklahoma jail that he was being held at for court, the Oklahoma Department of Corrections announced. Walker escaped by allegedly posing as his cellmate, whom he closely resembles, and posting bond for that inmate, the sheriff's department reported to ODOC. Walker is believed to be carrying his cellmate’s identification and might be going by his name: Charles Pendarvis. ODOC warned not to approach Walker, as he is considered extremely dangerous. Anyone with information about Walker’s whereabouts is asked to call ODOC’s confidential fugitive hotline at 866-363-1119 or email email@example.com.