Gholam Hossein Mohseni-Ejei made the remarks in a weekly press conference on Sunday, noting that none of those 25 people killed during the riots were shot by Iran’s security forces.
“A number of people, who took commands from abroad and were leaders of the recent riots have been taken into custody. A total of 622 people were arrested in the first three days of the riots, some of whom were later released on bail,” he said.
He added that the United States and Zionists are continuing their grudge and hostility against Iran and said, "They sought to harm the Islamic establishment."
However, he said, the Iranian people, backed by security forces, distanced themselves from rioters immediately after they realized that the enemy has hatched a plot to provoke unrest and stir insecurity in the country.
Millions of Iranians then poured into streets to tell the enemy that they would never be deceived even if there are some problems in the country, Mohseni-Ejei pointed out.
Since December 30, groups of Iranian protesters staged protests in several cities to voice their anger over rising prices and economic conditions. Sporadic violence has erupted during the protests, causing a number of deaths.
Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei said on January 2 that enemies have been using various tools to deal blows to the Iranian nation and the Islamic establishment in the course of the latest developments in the country.
“During the events of the past several days, Iran’s enemies, using the various tools at their disposal, including money, weapons, politics, and security apparatus, have allied [with one another] to create problems for the Islamic establishment,” the Leader said.
Ayatollah Khamenei's remarks came a day after Iran's President Hassan Rouhani said the Iranian people would deal with a "small and minority group" of rioters and lawbreakers exploiting the protests against economic conditions..
Rouhani said the nation would counter the small group that has used protests as an excuse to chant slogans in violation of the law and people's demands, insult the sanctities and values of the Islamic Revolution, and damage public property.
In a statement on January 1, Iran's Intelligence Ministry said it has identified and arrested some of the agents behind riots.
The ministry added that Iranian security forces helped by people had managed to detain some of the elements who incited unrest in several cities across the country.
Elsewhere in his remarks, Mohseni-Ejei said one addicted person arrested during the riots committed suicide at Arak police station. The spokesman noted that the city's judiciary branch has opened a case to investigate the issue.
The spokesman added that a 21-year-old man also committed suicide at Evin House of Detention after he was arrested in connection with recent riots. Mohseni-Ejei dismissed as "sheer lies" certain claims about the suicide of two other persons detained in relation to the riots.