The mother of a man who died in Otago Prison is considering a private prosecution or civil action against those responsible.
Jai Davis, 30, died in a cell in February 2011 from a suspected drug overdose.
In findings released yesterday, Coroner David Crerar said Davis' death should be investigated by the Health and Disability Commissioner and that the role of police should also be probed.
Radio New Zealand reported today that Mr Davis' mother Victoria Davis was considering her legal options.
"Where was the duty of care to my son? What they did was criminal. It was not a systemic breakdown, it was criminal," she told the radio station.