At least 10 people have now been killed in anti-government protests in Iran and security forces have had to fight off "armed protestors" trying to take over police stations and military bases, reports in the country's state media suggest.
Authorities had previously confirmed four deaths but the total is now believed to have risen after tens of thousands of people joined the protests, which began last week.
Hundreds of people have been arrested in the demonstrations.
As demonstrations continued, Hassan Rouhani, the Iran President, insisted people were "absolutely free to criticise" but said violence would not be tolerated.
He said: “The government will show no tolerance for those who damage public properties, violate public order and create unrest in the society.
“People are absolutely free to criticise the government and protest but their protests should be in such a way as to improve the situation in the country and their life.”
“Criticism is different from violence and and damaging public properties."
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