A convicted murderer described by one judge as a "psychopath", has been denied parole while he continues his lengthy rehabilitation, the Parole Board has ruled.
Travis Burns was sentenced in 2000 to life imprisonment with a minimum non-parole period of 15 years for killing Whangaparaoa mother Joanne McCarthy two years earlier.
He bashed Ms McCarthy to death with a hammer in her home while her children played nearby.
At sentencing, the judge said the crime appeared to be random and had "all the hallmarks of the work of a lone psychopath".
He rejected it was simply a burglary "gone wrong".