Police are offering a $100,000 reward on information about a Gisborne man who died in a suspicious fire seven years ago.
Ronald Russell Allison died in the fire at his home where he lived alone on Whatatutu Road, Te Karaka on 25 January 2013.
Since then, police have been investigating and believe the fire was deliberately started to kill the 88-year-old, who had limited mobility.
A scene examination found the blaze started in the kitchen, and a wooden farmhouse was quickly razed to the ground.
Police also revealed new information, during a TVNZ episode of Cold Case, about an item of interest found outside Allison's house on the lawn.
Another point of interest is a blue Nissan March car that travelled from Tauranga to Matatā, Tāneatua and Ōpōtiki and then in the direction of Te Karaka in the hours leading up to the fire.
Detective Inspector Rob Jones said police were offering a reward due to the seriousness of the matter.
"Allison was a much beloved family man, respected farmer, war veteran and well-regarded long-standing member of his community.
"The investigation team is encouraged by the information we have received as a result of the recent screening of the Cold Case episode, but we know there are still people who can help us finally solve this case.
"We are hoping with the passing of time these people now feel in a position to come forward and assist us."
The reward will be given in exchange for material information or evidence which leads to the identity and conviction of any person or people responsible for Allison's death.
Police said immunity from prosecution might be considered for any accomplice, not being the main offender, who provided information or evidence.
Anyone with information can go to their nearest police station or call 0800 COLD CASE, or email firstname.lastname@example.org, or call 105 and quote file number 130125/3212.