A second man has been arrested in connection to the 2016 murder of Lois Tolley in Upper Hutt.
Four intruders broke into Tolley's Upper Hutt home and shot her as she tried to escape, leaving her dead on the floor.
Police said a 27-year-old man was arrested in Auckland late last week and appeared in the Manukau District Court on Monday.
He's charged with aggravated burglary and two counts of intenet to rob, police said on Monday, and will be held in custody until his next court appearance in February.
Detective Inspector Scott Miller said the investigation remains ongoing.
Police arrested one of Tolley's alleged killers in September. He appeared in the Wellington High Court last month and has denied all charges against him.
The murder investigation began with more than 130 persons of interest and had included interviewing people in Australia.
Tolley, 30, was viciously stabbed and shot at close range just before midnight on Friday, December 9, 2016. Police described it as an "execution-style" killing.
A year later, a dozen people remained of interest to police in connection to the murder.
In 2017, Detective Senior Sergeant Glenn Barnett said he was "absolutely confident" arrests would be made.