A 78-year-old death row inmate said he was remorseful and 'ready to go' hours before he was put to death in a US state execution.
The world's oldest death row inmate was killed by lethal injection at a prison in Texas after he murdered a police officer decades ago.
Carl Wayne Buntion, 78, killed police officer James Irby in 1990 and was sentenced to execution, spending three decades waiting on death row amid several unsuccessful appeals.