SYDNEY - There have been three more blasts at automatic teller machines in Western Australia's capital, Perth, local media reported on Monday.

The most powerful blast occurred at 3:30 am (local time) on Monday at a Westpac ATM in the northern suburb of Whitfords and damaged the walls around the ATM, the Australian Associated Press reported.

Earlier explosion occurred at National Australia Bank ATM at Cockburn Shopping Center in the southern suburb of Success at 1:40 am (local time) and 20 minutes later, policed received another report of attack on a BankWest ATM in the suburb of Canning Vale.

Bomb squad police are investigating the three attacks on ATMs in Perth.

In the past ten days, six attacks on ATMs occurred in the capital city of Western Australia.