Tear gas, water cannons and riot cops armed with clubs have been deployed today to streets of the Iranian capital as thousands of protests took to the streets.
Protests over unemployment and food prices quickly spiralled into widespread calls for the collapse of the ruling Islamic regime.
Videos and pictures erupted on social media from the tightly controlled state showing protests and violence amid chants of “death to the dictator”.
And now the People’s Mojahedin Organization of Iran (PMOI) has outright called for revolution while speaking to Daily Star Online.
Shahin Gobadi, a spokesman for the group, told this website: “Their regime has no future, it is doomed to failure, and it is time for the international community to recognise the Iranian people’s resistance to overthrow that regime.”
US President Donald Trump has also waded into the protests, warning Iran “the world is watching”.
Mr Gobadi said: “People have been on the streets in large numbers across Iran for three days despite huge risks and the regime’s total mobilisation of its suppressive forces
"This clearly indicates the pervasive sentiment of the Iranians. In a nutshell, the Iranian people have shown their desire for regime change.”
He said there is “no doubt” protestors hitting the streets “are opposed to the entirety of the regime and want regime change”.
The campaigner told this website campaigners are chanting for the end of aggressive Iranian policy in Lebanon and Syria, which has seem the regime become at loggerheads with Saudi Arabia.
The controversial PMOI consider themselves a government in exile, and have long advocated the overthrown of the hardline regime.
Britain also designated the group a terrorist organisation until 2008, with the group renouncing violence in 2001 and campaigning for a " secular, democratic, non-nuclear republic”.
PMOI members were also instrumental in the exposing of Iran’s nuclear programme back in 2002, revealing two top secret nuclear sites being constructed by Tehran.
US officials urged President Trump to enter into talks with the PMOI to “establish a dialogue with Iran’s exiled resistance” earlier this year.
Washington listed the PMOI as a terrorist group right up until 2012.
Protests in Iran have been ongoing for the past three days, with reports of dozens being arrested and images allegedly showing dozens of people wounded by police.
Iranian regime officials warned people of “illegal gatherings”after the first two days of protests
Mr Gobadi told Daily Star Online: "The Iranian people’s protests have been taking place in large parts of the country and are into their third day and have now reached the capital Tehran.
"Their slogans ‘Death to the dictator’ and ‘Death to Rouhani’ and further chants today that ‘No to reformists, no to hardliners; this game is over’ leave no doubt that they are opposed to the entirety of the regime and want regime change."
This weekend’s protests have been dragged into the spotlight after the US waded in and seemingly gave its backing to the demonstrators.
Trump tweeted: "Many reports of peaceful protests by Iranian citizens fed up with regime’s corruption and its squandering of the nation’s wealth to fund terrorism abroad.
"Iranian government should respect their people’s rights, including right to express themselves.”
Iran's foreign ministry spokesman Bahram Ghasemi dismissed Trump's comments as "irrelevant" and "opportunistic”.
State-media coverage within Iran has been focused on the pro-regime rallies held to mark the defeat of the last major unrest to hit the country in 2009.
"The enemy wants once again to create a new plot and use social media and economic issues to foment a new sedition,” Iranian hardliner Ayatollah Mohsen Arak told a crowd in Tehran.
Meanwhile, Interior Minister Abdolrahman Rahmani Fazli said: "We urge all those who receive these calls to protest not to participate in these illegal gatherings as they will create problems for themselves and other citizens."
