Police are seeking sightings of two vehicles of interest after a suspicious house fire in the Southland town of Waikaia last week.
Emergency services were called to a property on Elswick St just after midnight on Wednesday.
No one was injured in the blaze, but the house sustained "extensive damage".
Detective Sergeant Brian McKinney said that investigators would like to hear from anyone who saw either a red vehicle or a dark-coloured twin-cab ute towing a trailer.
"Both vehicles were seen in the vicinity of Elswick Street shortly after the property was set alight.
"The red vehicle was seen leaving Elswick Street and heading at speed towards Riversdale."
McKinney said that police would like to hear from anyone who saw vehicles matching those descriptions either prior to or after the fire.
"The investigation is ongoing, and we would like to thank the people who have come forward so far."
Anyone with information can contact police on 105 or anonymously by calling Crime Stoppers on 0800 555 111.
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