Investigations are ongoing following a series of suspicious grass fires in the greater Gladstone region.
Detectives from Gladstone Criminal Investigation Branch are appealing for public information about the incidents, occurring between April and May.
Police say a large number of grass fires have been reported around Corkwood Road and Don Young Drive in Gladstone, the Dawson Highway at Burua, the Bruce Highway at Calliope and Gladstone Mount Larcom Road at Yarwun.
Officers suspect they have all been deliberately lit.
A grass fire near a property on the Dawson Highway, in Burua, spread and damaged heavy machinery onsite.
If you have any information, you are being urged to come forward.