Detective Senior Constable Ray Causer said at some point overnight, a small fire had been lit against the side of the building adjacent to the cube courtyard.

“At this stage police are conducting inquires in relation to the circumstances of how the fire has been started,” he said.

“The fire was already out when crews arrived.

“It’s only located in a small area and it appears only cardboard boxes have been lit up against the building.

“We’ve got a small fire located that wasn’t going to go far.

“The building at the bottom was not going to light without some form of accelerant.”

Senior Constable Causer said CCTV footage did not cover the area of the building where the fire occurred.

“If anyone has knowledge into how the how it was started they should contact police,” he said.