Investigations are continuing into a suspicious fire at Kingsthorpe in the early hours of this morning.
Preliminary investigations indicate around 4.30am, police and emergency services were called to a service station on the Warrego Highway.
On arrival, a demountable building located nearby was engulfed in flames.
QFES attended the address and extinguished the blaze.
The building sustained significant flame, smoke and water damage.
Detectives from the Toowoomba Criminal Investigation Branch declared a crime scene and investigations are continuing.
Motorists with dashcam footage who may have been travelling on the Warrego Highway between Toowoomba and Oakey between 4am and 5am this morning, Wednesday June 13, are asked to contact police.
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.