The Arizona Department of Corrections' supply of midazolam, a sedative, expired on May 31 and it has not been able to replace it, state lawyers said in the filing in Phoenix's U.S. District Court. “What is more, the Department's source of midazolam has vanished under pressure from death penalty opponents,” the court document said. The lawsuit was filed on behalf of seven death-row inmates who allege that Arizona's use of midazolam and two other drugs violate the U.S. Constitution's ban on cruel and unusual punishment.
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Arizona says it has run out of drugs for executions