
The fire, which occurred in Waikaia overnight on February 21, 2024 left an Elswick St house and two vehicles on the property extensively damaged.
"Thankfully there were no injuries," Detective Sergeant Brian McKinney said in a statement today.
Police earlier called for sightings of vehicles in the area at the time, and said the fire could be linked to previous thefts from the property.
Det Sgt McKinney today said police were determined to hold the person responsible accountable, "and while an offender has not been located at this stage, we're making progress to an arrest".
"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."

"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."
Anyone with information is urged to contact police.
- 105, reference number 240222/8704, or through Crime Stoppers on 0800 555 111.