PHOENIX (AP) -- Lawyers for Arizona death row inmate Joseph Wood have asked a federal court to stop his scheduled July 23 execution over concerns about the state's two-drug protocol.
The 21-page complaint filed Thursday in U.S. District Court says the Arizona Department of Corrections plans to use midazolam and hydromorphone for the first time.
The previous 11 Arizona executions since 2011 used pentobarbital, but its sole manufacturer has refused to sell it to states for use in executions.
Wood's attorneys say midazolam and hydromorphone have been problematic during recent executions in other states. They call the use of the drugs "human experimentation" and say it violates Wood's civil rights.
The 55-year-old Wood was sentenced to death for the 1989 killings of his estranged girlfriend and her father at a Tucson auto-body shop.