Triple murderer Gregory Brazel has been committed to stand trial over allegations he defrauded two inmates - one a convicted wife killer - of almost $50,000.

Brazel, 59, who is serving a life sentence for killing three women, allegedly induced inmates Thomas Kenyon and Peter Caruso into transferring money into his control between March and May 2011, while the trio were prisoners at the Metropolitan Remand Centre.

Caruso, 80, was jailed in 2010 for the 2008 bashing murder of his wife of 50 years.

Magistrate Suzie Cameron found there was sufficient evidence to find Brazel guilty of three charges of obtaining property by deception after a committal in the Melbourne Magistrates Court.

Brazel, who represented himself over the three days, on Thursday pleaded not guilty to three charges. Another charge, that he allegedly defrauded Kenyon on $2000, was withdrawn.

Brazel was remanded in custody to appear before the County Court on Friday for a directions hearing.