Police are appealing for help after three suspicious car fires in Yaroomba and Coolum on 18 July.
Just after 9pm, emergency services were called to Warran Road in Yaroomba following reports a black Honda CR-V was on fire.
A call was received around 9.30pm after a green Suzuki Ignis was set on fire on Tharra Street in Coolum.
There was another fire along Warran Road in Yaroomba at 9.45pm after a Mazda 121 hatchback was found to be on fire.
All the fires were extinguished however the three vehicles sustained significant damage.
Police are appealing to anyone with relevant dashcam or CCTV vision and any witnesses to come forward.
Investigators are especially seeking assistance from anyone who may have been in the area between Warran Road in Yaroomba and Tharra Street in Coolum between 9 and 10pm to contact police.