lawyer of a death row inmate watched as his body "turned purple" and "head snapped back" while he was being put to death by gas chamber.
Attorney Jim Belanger represented Don Harding, a triple murderer responsible for a string of killings in Arizona, the US, in 1980.
Don Harding tied up businessmen Robert Wise and Martin Concannon at a hotel before beating and shooting them, the Daily Star reported.
The 43-year-old was convicted of killing in another man in a similar way, and was put to death in the state’s gas chamber in 1992.
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