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

Iran’s government cut off the country from the internet and international telephone calls Thursday night as a nighttime demonstration called by the country’s exiled crown prince drew a mass of protesters to shout from their windows and storm the streets.

Protests are reported in Tehran and other major cities, while an internet monitoring groups says there is a "nationwide blackout".

Protests erupted in Iran's capital Thursday evening following a call by exiled Crown Prince Reza Pahlavi for mass demonstrations.

Internet connectivity data collected on Thursday showed that the country went almost completely offline, as the government cracks down on protesters.

Huge crowds of protesters have been marching through Iran's capital and other cities, with people heard calling for the overthrow of the supreme leader.

Iran facing "nationwide internet blackout," monitoring group says, amid hope that 12 days of deadly protests may swell into a tipping point against a repressive regime.

A nationwide internet blackout was reported in Iran on Thursday, internet monitoring group NetBlocks said, as Tehran rolled out high-stakes subsidy reforms in the face of escalating protests against economic hardship.