The Spokesperson of Judiciary Branch Gholamhossein Mohseni Ejei highlighted in the 123rd press conference the similarity between the days leading to the Islamic Revolution and the recent protests and said that the enemy provoked riots in Iran in order to lead astray the rightful demands of the nation.
Tehran prosecutor Abbas Jafari Dolatabadi said 440 "arrested rioters" have been released in Tehran alone.
He gave no further details, but earlier this month another judicial official had said a European citizen was arrested during anti-government protests in Borujerd county in western Iran, without specifying their nationality.
It was not clear how many Iranians are still detained elsewhere, and the largest and most violent of the demonstrations were held in the provinces.
Iranian authorities have arrested a dual national who was taking pictures during recent unrest, Iran's judiciary spokesman was quoted as saying on Sunday, as security forces sought to contain the most widespread protests in the country since 2009.
Clashes broke out at some protests, and at least 21 people were killed. But they have portrayed the violence as part of a conspiracy by the United States, Israel and other countries to try to overthrow the clerically-overseen government.