Bomb squad officers on Queensland's Gold Coast have detonated a suspicious device found attached to the fuel line of a vehicle at a business in Burleigh.
The warehouse was evacuated after the discovery of the device strapped to a car, parked inside the AWL Canopies business about 8:30am (AEST).
The firm's production manager, Darryl Frankham, says when he arrived at work staff told him they found a plastic bottle containing powder and a wick attached to the fuel line of a utility.
He says police were called and staff were told to evacuate the building.
"There was a plastic container filled with powdery sort of stuff, with a two-foot wick sticking out of it," he said.
"Firstly we thought it was a bit of a practical joke but we took it seriously and called the cops and they said evacuate immediately."
Inspector Greg Baade says the device contained an unknown substance.
"We're not sure - obviously scientific tests will be done on the substance, but at this early indication is that it was not an explosive device," he said.
"The bomb technician went in and actually removed it from the fuel line and out into the car park where he put sand bags over it and detonated the device."
Mr Frankham says he was concerned there could be a link with similar incidents at a Gold Coast car yard.
He says it was a shock for the owner of the vehicle.
"The customer has been driving it around for a couple of days, so he's a little bit upset about it," he said.
"I reckon they [the perpetrator] must be an absolute nutcase - I just often wonder what the world's coming to, to be quite honest."