A recent execution was unsuccessful, prompting a review of procedures. This incident is the second in a short period, following another failed execution a few months prior. The commissioner of the Tennessee Department of Corrections has a background that includes a role in Arizona's corrections department, where several executions were problematic.

Governor Bill Lee has taken steps to address the issue, including a stay of execution and an investigation into the recent lethal injection that did not work as intended. The investigation will be conducted by a third party.

Further details about the events and the investigation are available from the source.