DENVER (AP) - Attorneys for the man convicted of killing four people at a Colorado pizzeria in 1993 have launched another legal offensive to stave of his execution.
Nathan Dunlap's lawyers filed a lawsuit Thursday saying the way prison officials plan to put him to death could cause prolonged and excruciating pain, a violation of the Constitution's ban on cruel and unusual punishment.
The lawsuit also says officials are planning in secret for the execution, violating Dunlap's due process rights.
Dunlap has been on death row since 1996, when a jury convicted him of murder and sentenced him to die for the shooting deaths at a Chuck E. Cheese restaurant in Aurora.
A judge scheduled his execution for the week of Aug. 18.
It would be the first execution in Colorado since 1997.
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