Byron Black was executed after a back-and-forth in court over whether officials would need to turn off his implantable cardioverter-defibrillator, or ICD. Black, 69, was in a wheelchair, suffering from dementia, brain damage, kidney failure, congestive heart failure and other conditions, his attorneys have said.

On Tuesday morning, 69-year-old Bryon Black was put to death by lethal injection at the Riverbend Maximum Security Institution in Nashville for murdering his girlfriend, 29-year-old Angela Clay, and her daughters, 9-year-old Latoya and 6-year-old Lakeisha.