Australian bank Westpac has suffered an IT meltdown overnight following an air conditioning fault at one of the bank’s datacentres. A Westpac spokesperson told Computerworld Australia the system issues had been triggered by an air conditioning problem resulting in the shut down of the bank’s online banking facilities. “It has also affected a number of our ATM and EFTPOS facilities so obviously at the present moment we’re trying to rectify the issue to ensure our customers aren’t interrupted.” [ With the increasing threat of cyber crimes, protect yourself and stay informed on the latest news with Computerworld's Security newsletter ] The bank also issued a statement via its website and Twitter noting issues and the unavailability of its online banking services. “We are currently experiencing technical issues. Currently being investigated. Very sorry for inconvenience,” the bank tweeted. An EFTPOS spokesperson said the outage was “very much being handled by Westpac”, however noted EFTPOS was working with the bank to resolve the issue. The meltdown follows the bank’s recent glitch with its online banking portal which suffered numerous issues throughout a two week period. According to posts on the bank’s Twitter page at the time, the issue was caused by “heavy demand” for its online banking services. "We're experiencing heavy demand for online banking at the moment. If you can't log in, please try again in a short while," read one tweet from the bank at the time. As reported by Computerworld Australia, the bank’s customers have recently been subjected to a slew of malicious emails requesting customers to fill out a survey or restore their account details. It also found evidence of fake SMS asking for account details as well as scammers phoning up customers claiming to be from Westpac.