ALSO READForeign agents blamed for death of two protesters Iran warns protesters will 'pay the price' after third night of unrest Iran President Hassan Rouhani declares end of Islamic State, thanks martyrs Iranian Prez Hassan Rouhani's brother arrested on financial crime charges Trump slams Iranian govt for internet censorship, supports citizens' rights
Iran's President also slammed the comments made by his US counterpart, Donald Trump, regarding the rallies.
"Anyone who calls the Iranian people terrorists does not have the right to sympathize with the people," Rouhani said.
Two people died on Saturday in the western Iranian province of Lorestan during the protests, the deputy governor of the province Habibollah Khojastepour said.
Khojastepour said the death of the two civilians on Saturday night in the city of Dorud in Lorestan, adding that the authorities wanted to disperse the demonstrations peacefully, according to the semi-official ISNA news agency.
Some of those arrested were later released, while others were remanded to custody, Naserbajt told the ILNA news agency.
Illegal rallies took place in Tehran and security forces were deployed to prevent harm to civilians, Naserbajt said.
Jabar Zada said authorities were conducting investigations to find out who was behind the protests.