Clayton Lockett’s execution in Oklahoma wasn’t the first to go awry. A number of other executions have had problems over the years.
Clayton Lockett Oklahoma prison officials halted the execution of Clayton Lockett, 38, on April 29, 2014, after the use of a new three-drug combination failed to go as planned. Lockett, who was convicted of shooting a 19-year-old woman and watching two accomplices bury her alive, died of a heart attack 43 minutes after the execution began. Buy Photo
STORY: Inmate dies following botched Oklahoma execution, second execution delayed
Oklahoma Department of Corrections/via AP