KEY POINTS
  • The wave of anti-government demonstrations in several cities are the biggest challenge to Iran's leaders since unrest in 2009
  • Two protesters were shot dead in the western town of Dorud on Saturday night
  • The deputy governor of Lorestan province blamed foreign agents for the deaths
People gather to protest over high cost of living in Tehran, Iran on December 30, 2017.

Protesters in Iran who have staged three days of demonstrations over economic hardship and alleged corruption should pay a high price if they break the law, the government said on Sunday.

The wave of anti-government demonstrations in several cities are the biggest challenge to Iran's leaders since unrest in 2009 that followed the disputed re-election of then-President Mahmoud Ahmadinejad went on for months.