Video & Images: WIN News
Police are treating a fire at Amigos Bar & Grill on Margaret Street as a crime scene.
Multiple fire crews were called out to battle the blaze at the popular Toowoomba restaurant last night.
Witnesses say they first saw smoke smouldering around 11pm with the restaurant engulfed in flame half an hour later.
Guests staying at the Quest Toowoomba were evacuated with the building sustaining smoke damage.
By 6.15am firefighters had finally managed to extinguish the massive blaze.
Police closed off Margaret Street from Neil to Hume Streets.
The fire has caused damage to a number of surrounding buildings including Canberra House.
Forensic Investigators will today look into the cause of the fire and are calling for witnesses to come forward.
No one was injured.