薬殺刑
As of 2021, the only places in the world that still reserve the electric chair as an option for execution are the U.S. states of Alabama, Florida, South Carolina, Kentucky, and Tennessee. Arkansas and Oklahoma laws provide for its use should lethal injection ever be held to be unconstitutional. Inmates in the other states must select either it or lethal injection. In Kentucky, only inmates sentenced before a certain date can choose to be executed by electric chair. Electrocution is also authorized in Kentucky in the event that lethal injection is found unconstitutional by a court. Tennessee was among the states that provided inmates with a choice of the electric chair or lethal injection; in May 2014, however, the state passed a law allowing the use of the electric chair if lethal injection drugs were unavailable or made unconstitutional. In Florida, on July 8, 1999, Allen Lee Davis, convicted of murder, was executed in the Florida electric chair "Old Sparky". Davis' face was bloodied, and photographs were taken, which were later posted on the Internet. An investigation concluded that Davis had begun bleeding before the electricity was applied and that the chair had functioned as intended. Florida's Supreme Court ruled that the electric chair did not constitute "cruel and unusual punishment". The 1997 execution of Pedro Medina in Florida created controversy when flames burst from his head. An autopsy found that Medina had died instantly when the first surge of electricity had destroyed his brain and brain stem. A judge ruled that the incident arose from "unintentional human error" rather than any faults in the "apparatus, equipment, and electrical circuitry" of Florida's electric chair. Lethal injection has been the primary method of execution in Florida since 2000. On February 15, 2008, the Nebraska Supreme Court declared execution by electrocution to be "cruel and unusual punishment" prohibited by the Nebraska Constitution.