Byron Black noted intense pain during his lethal injection death earlier this week, with some wondering if it was because his defibrillator wasn’t deactivated.

After the execution of Byron Black on Aug. 5, witnesses are slated to speak at a news conference outside the prison.

The attorney for a Tennessee man who said he was “hurting so bad” during his lethal injection this week says his implanted defibrillator did not shock him during the execution.