Liam Reid was convicted of the murder and rape of deaf Christchurch woman Emma Agnew.

Notorious murderer Liam Reid is set to marry his disgraced lawyer Davina Murray in prison on Tuesday.

Reid is serving a life sentence for the 2007 rape and murder of deaf Christchurch woman Emma Agnew and the rape and attempted murder of a Dunedin student a few days later.

Murray smuggled an iPhone, cigarettes and a lighter to Reid in Mt Eden prison in 2011, while acting as his lawyer.

GRAHAME COX/FAIRFAX NZ Former lawyer Davina Murray was struck off after smuggling contraband into prison.

The Corrections Department on Monday confirmed a wedding was taking place in Auckland Prison on Tuesday morning. A source told Stuff it was Reid and Murray who would be getting married.

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"A prisoner is allowed to marry their partner with the permission of the prison director, who considers whether the ceremony poses a threat to the safety, security or good order of the prison," said deputy prison director Tom Sherlock.

"Although a rare occurrence, weddings or civil union ceremonies are not restricted in prisons and each application is considered on a case by case basis. The appropriate security measures will be in place tomorrow. There is no cost to the prison."

Murray has been contacted for comment.

She has previously said she and Reid fell in love when he was her client, leading to her smuggling a phone and tobacco to him in prison.

She defended herself in the Auckland District Court where she was rebuked by Judge Russell Collins for her bizarre defence tactics including repeatedly talking over the judge and witnesses, emailing demands to the registrar, and laughing and grinning at the media.

In 2015 she was struck off as a lawyer after a disciplinary committee heard of her "concerning and worrying" history of unsatisfactory conduct.

Lawyers and Conveyancers Disciplinary Tribunal chairwoman Judge Dale Clarkson said Murray's behaviour was of "such a serious level" that no response short of being struck off would be a proper one.