A truck that caught fire on Saturday night was found to have balls of newspaper stuffed inside cavities around the motor, leading fire services and police to believe arsonists may be behind the incident.
Fire services were called out to 85 Meanee Quay in Westshore, Napier just after 4am yesterday morning where they found the truck alight.
It had been parked in an empty lot across the road from a motel for the night.
Witnesses told fire services it had at one stage been quite large but fireman Peter Draper, who attended the scene, said it had died down to a small fire by the time they arrived.
One firetruck was used to extinguish the blaze.