Last month, Kenneth Smith became the first person to be executed via nitrogen hypoxia

Lindsay Sandiford has been waiting to be executed for over 10 years

His executioners tried 18 times to administer a lethal injection

Concerns were raised over the untested method of execution

Convicted killer Kenneth Smith was allowed one final meal of his choice before his execution.

Kenneth Smith was killed with the controversial method of nitrogen hypoxia on 25 January.

Kenneth Smith has been executed for a murder-for-hire he committed in 1988

The man who invented a euthanasia pod has said he's concerned about the death row execution

The court rejected a request from a death row inmate

The convicted killer has previously survived an execution

Death Row inmate Kenneth Eugene Smith is set to be killed by an untested execution method

Inmates no longer leave this world with a full belly of their favourite food because of Lawrence Russell Brewer.

Death Row victims and their most disturbing final words have been revealed.