While no offender has been located at this stage, police were progressing to make an arrest, he said.
“There are positive leads in our investigation that we are looking into, however, we continue to appeal to the public for any information they have on this incident.
“Police appreciate this arson was some time ago, however, any information provided by the public could be pivotal to the investigation.
“We know there are people out there who may know something about this house fire, and we would like them to get in touch.“
”If you know anything, we encourage you to come forward and speak to us."
People with information that can assist in investigations can contact Police online through 105.police.govt.nz and clicking “Update Report” or by calling 105.