This 2011 photo provided by the Oklahoma Department of Corrections shows Charles Warner. Warner was executed Thursday for the 1997 killing of his roommate's 11-month-old daughter. AP hide caption
Clayton Lockett Clayton Lockett
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Clayton Lockett
This photo provided by the Oklahoma Department of Corrections shows Clayton Lockett. Uncredited/AP hide caption
This file photo combo of images provided by the Oklahoma Department of Corrections shows Clayton Lockett, left, and Charles Warner. Uncredited/AP hide caption