Police are appealing for public assistance following a traffic crash at Lower Wonga north-west of Gympie last Friday.
Emergency services were called to a crash involving a car pulling a caravan and a white B-Double truck on the Wide Bay Highway, between Gympie Woolooga Road and Hayes Road, around 8.30am.
Initial investigations indicate the incident resulted in the caravan rolling onto its side and blocking one eastbound lane.
The car was not impacted, and the driver and passenger were not injured.
Police believe the truck involved did not stop.
Police are investigating and are appealing to anyone who witnessed the incident or has dashcam footage of that area around that time to contact police.