Updated

Arizona officials will no longer administer the two-drug combination used in the nearly two-hour execution of Joseph Rudolph Wood this year.

The state Department of Corrections will instead try to obtain drugs that were successfully used for many years but have become obsolete and difficult to obtain. If the state cannot get those drugs, it will use a different three-drug combination that will include midazolam, the sedative used in Wood's death.

The change follows the results of an independent investigation into Wood's July 23 execution. Wood was convicted of murdering his ex-girlfriend and her father. It took nearly two hours for him to die.

His attorneys say the execution was botched, but the report found it was not. The state has put other executions on hold.