Forty-eight-year-old Johnny Dale Black was one of five men arrested in the murder of Bill Pogue, of Ringling. That included two of Black's brothers.
Pogue was stabbed 11 times, and both his lungs were punctured in an attack Black said was a case of mistaken identity. Pogue's son-in-law was also stabbed.
Black says he and his brothers mistook Pogue for another man they were looking for.
Then, after his arrest, Black and another Jefferson County inmate escaped from the jail in Waurika, but were recaptured within a day.
The defendants gave conflicting statements of the murder that implicated each other and Black was the only one to be sentenced to die.
His brothers said Black did the stabbings, and they were convicted of manslaughter.
Black's execution is set to begin at around 6 p.m. in McAlester.
It will be the sixth execution of the year in Oklahoma.
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