The lawsuit effectively became moot last month when the Department of Corrections issued a revised execution policy that contained changes the prisoners had been seeking through the lawsuit.
The most significant changes are they will be put to death with a single lethal chemical rather than a mixture of three, they will have access to their attorneys for up to an hour before the execution, and witnesses will be allowed to view them being prepped for the execution.
The department had informally changed to those policies before the written policy was revised in September.
The delay in the dismissal came because attorneys for the death-row prisoners had to meet with their clients to get their approval.
The changes were forged from three lawsuits and legal challenges in individual executions and came after the 9th U.S. Circuit Court of Appeals questioned certain execution policies.
Judge Neil V. Wake signed dismissal order agreed upon by the parties.
Richard Stokely will likely be the next Arizona prisoner executed. The state Supreme Court will consider his death warrant on Oct. 30.
Stokely was sentenced to death for the 1991 rape and murder of Mandy Meyers and Mary Snyder, both 13, from Cochise County.