Police are investigating a burglary on an ATM at a bank on Aviation Road, Laverton about 4am
Police said the back safe section of the ATM had been taken in the raid.
Investigators are trying to establish if explosives were used by the burglars during the theft as there was a report of an explosion at the time the ATM was taken.
Police are appealing for anyone who may have seen a vehicle in the area at the time or has any information in relation to the matter to contact them.
The exit ramp to and from the Princes Freeway is blocked at Aviation Road.
Anyone with any information is asked to contact Crime Stoppers on 1800 333 000 or the website at www.crimestoppers.com.au