A joint inquest is underway for a murdered life coach, and a man thought to have taken his own life - after his daughter was killed by the same murderer

Paul Wilson - also known as Paul Tainui - raped and murdered 27 year old Christchurch woman Nicole Tuxford, when he was on parole for the 1994 rape and murder of his ex girlfriend.

The news he had killed again was too much for the father of his first victim, who then died in a suspected suicide.

During a two week inquest, Coroner Marcus Elliott will be looking at the accuracy and adequacy of information Corrections' psychological services gave the Parole Board - and how Corrections managed the risk of re-offending.