Police in Victoria and New South Wales say there is no increased security threat for Anzac Day events.
Would-be troublemakers have been warned to stay away from Anzac Day events across Victoria, as police prepare to blanket the city ahead of commemorations.
Authorities will maintain a strong presence at the Shrine of Remembrance and throughout the CBD for Thursday's services and ceremonies, as well as two major AFL matches on Wednesday night and Anzac Day.
"If your intention's to come in and disrupt any activities or behave inappropriately (in a way) that puts the safety of members of the public or an event at risk, you'll be dealt with accordingly and police will take a zero-tolerance approach to anti-social behaviour," Acting Superintendent Craig Peel told reporters.
Supt Peel added there was no increased security threat following a string of bombings which killed more than 300 people at churches and hotels in Sri Lanka on Easter Sunday.
"There is no intelligence at all to suggest that any of these events that we're running across the state are a target for any sort of behave that would be detrimental to them being run safely," he said.
NSW Police have also reassured the public there are no security threats for Anzac Day commemorations.
A range of strategies will be in place to provide a safe and secure environment for events across the state on Thursday, Acting Assistant Commissioner Tony Cooke said.
"I can assure the community there is no specific threat we're aware of in relation to Anzac Day and the threat level remains at probable, as it was this time last year," Mr Cooke told reporters in Sydney on Wednesday.