Iran’s supreme leader placed the country’s security services on their highest state of alert as protests threatened to topple the regime.

Many Iranian opposition activists are hoping the current unrest could be the beginning of the end of the country's hardline Islamic regime.

Tehran escalated its threats Saturday, with the Iran’s attorney general, Mohammad Movahedi Azad, warning that anyone taking part in protests will be considered an “enemy of God,” a death-penalty

Iranian protests sparked by a currency collapse evolved into a broader uprising demanding regime overthrow, with demonstrators torching government buildings across provinces.

In a serious challenge to Iran’s authoritarian government, angry protests have spread from the markets and universities of major cities to the impoverished towns in the hinterland.

The Army's warning comes as at least 65 people have been killed and more than 2,300 detained, according to rights groups, and as US President Donald Trump threatens to hit Iran “very, very hard” if protesters are killed.

Iran's Ayatollah Khamenei will flee the country, Donald Trump has said, after weeks of vicious protests which could topple the Islamic Republic. The Supreme Leader placed his security forces on their highest state of readiness on Friday as the deadly demonstrations spread further across his country - including to capital Tehran.

Rallies on major roads in the capital and in Iran's second city were peaceful and not dispersed by security forces.