Lethal injection
Prior to Inslee's moratorium, Washington's capital punishment law required that capital punishment imposed by the state's courts be carried out at the Washington State Penitentiary in Walla Walla. Procedures for conducting executions are supervised by the Penitentiary Superintendent. Washington utilizes two methods of execution: lethal injection and hanging. Lethal injection is used unless the inmate under sentence of death chooses hanging as the preferred execution method.