The size of the explosion which rocked Harbourtown on Saturday night destroying four automatic teller machines has been revealed in video of the blast released by police.
The explosion, thought to have been timed to coincide with the city's Australia Day fireworks celebration, caused extensive damage to the ATMs and surrounding area.
Police said an assessmentrevealed that two ATMs were targeted in the attack but another two were also damaged.
Police released security vision today from an internal camera.
Taken from a camera a floor above the blast, it shows the force of the explosion rocking the complex and causing damage beyond the blast area.
Seconds after the blast, a hooded figure is seen running up and escalator and out of the vision of the camera.
Detectives are asking anyone with information regarding this incident to call Crime Stoppers on 1800 333 000.