Tennessee prison system head to resign after failed Christa Pike execution

The head of Tennessee's prison system is set to resign after the botched execution of Christa Pike earlier this week, Gov. Bill Lee announced Saturday.
Lee said that Tennessee Department of Correction Commissioner Frank Strada will step down this month, but did not offer any other specifics.
Strada said in a statement that he believes "the Department carried out its responsibilities in accordance with the established protocol," but that "stepping aside is in the best interest" of the state's residents as an independent review ordered by Lee begins.
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