What Happened Last Night? Questions Remain After Arkansas Execution
The execution of inmate Kenneth Williams on Thursday night has prompted calls for an investigation after reports that he was lurching and convulsing about 3 minutes into the lethal injection process.
Williams is the fourth convicted killer put to death in Arkansas over a period of 8 days.
What happened last night, and how is it linked to a controversial drug used in the deadly three-drug cocktail? We'll explain.