On September 4, Oklahoma released a report from its investigation into the botched execution of Clayton Lockett. The review, which was conducted by investigators from the Oklahoma Highway Patrol, found several problems that may have contributed to the prolonged execution attempt on April 29. The execution was stopped by the warden, curtains were drawn in the chamber, but the inmate died afterwards, reportedly from the residues of the lethal drugs in his system. The state report found insufficient training of corrections officials, communication difficulties between those inside and outside the execution chamber, and a lack of contingency planning in case problems arose. The direct cause of the botched execution, according to the report, was the improper insertion of the IV, combined with the fact that the IV site was hidden from view and was not monitored throughout the execution process. The report offered eleven recommendations for future lethal injections, including observation of the IV insertion point, ongoing training for the execution team, established contingency plans and backup execution supplies in case of problems, and improved communications. Dale Baich, an attorney for Lockett, said, "The state’s internal investigation raises more questions than it answers. The report does not address accountability. It protects the chain of command. Once the execution was clearly going wrong, it should have been stopped, but it wasn’t. Whoever allowed the execution to continue needs to be held accountable."