The gas chamber at San Quentin State Prison prior to its disassembly in March 2019. Prior to the completion of the lethal injection room lethal injections were performed within the gas chamber with staff removing the chairs and placing a gurney within the chamber to execute an individual. It was last used to kill an individual with poison gas on August 24, 1993 and last used to kill an individual via injection on January 17, 2006.