PHOENIX (AP) — As it aims to resume executions after a seven-year hiatus, Arizona has refurbished its gas chamber, where the nation's last lethal-gas execution was carried out more than two decades ago before the United States rejected the brutal nature of the deaths.

The state has purchased materials to make hydrogen cyanide gas, which was used in some past U.S. executions and which the Nazis used to kill 865,000 Jews at the Auschwitz concentration camp alone.

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