THE US Consulate in Melbourne has warned it’s citizens in Victoria and around the country to be on high alert, declaring a terror attack on Australian soil was “likely”.

It’s the first time this century that the consulate has issued such a warning, and said it reflected the heightened security level of the Australian government.

The alert comes in the wake of a number of terror related arrests in the state. Last month, a 17-year-old was charged on suspicion of carrying out a terror plot on Mother’s day. The police operation came just weeks after a separate incident where an 18-year-old Melbourne man was charged when police uncovered plans for an “ISIS inspired” terror attack on Anzac Day.

Due to the nature of the ongoing threat, US consulate is compelling its citizens to “maintain a high level of vigilance” and to “take appropriate steps” to enhance their personal security.

“U.S. citizens are strongly encouraged to review your personal security plan, remain aware of your surroundings including local events, and monitor local news stations for updates.” the alert says.

The warning comes as the court date has been set for a 14-year-old British boy who is facing terror charges for his involvement in the Anzac Day terror plans. The boy has been charged with two counts of inciting another to commit an act of terror. It is alleged he recruited the 18-year-old Melbourne man and had incited him to behead strangers in the name of IS.

A spokesperson for the US Embassy in Canberra told The Australian yesterday that all overseas missions were mandated by US law to share information that impacts on the American expatriate community.

The US consulate also urged its citizens living in Australia to enrol in the Department of State’s Smart Traveller Enrolment Program. The program allows subscribers to receive security updates and “makes it easier” for the consulate to contact its citizens.