Three weeks after the violent crackdown on protests in the Iranian city of Sahedan in the south-east of the country, hundreds of people again demonstrated against the government in Tehran on Friday.
Videos posted online showed protesters outside a police station chanting "Death to the dictator."
Another video shared by US-funded radio station Farda showed protesters shouting "death to Khamenei" and "unity, unity" after Friday prayers.
"Around 57 rioters" were arrested, the state news agency IRNA reported, citing the police chief of the province of Sistan-Baluchistan, Ahmad Taheri.
"At noon today, after Friday prayers at the Makki Mosque in Sahedan, around 100 to 150 thugs and rioters chanted slogans and threw stones at shops, cars and banks," he said.
The “instigators” have been identified and the police are investigating.
Protests in Sahedan began on September 30th
Located near the borders of Afghanistan and Pakistan, the province is one of the poorest regions in the country and home to the Baluchi minority.
The majority of them adhere to Sunni Islam and not to the Shia Islam that prevails in Iran.
Human rights organizations have long complained about discrimination by the Shia leadership in Tehran.
Every year, a disproportionate number of Baluchis are killed or sentenced and executed in clashes with the security forces.
The protests in Sahedan began on September 30 after a young girl was allegedly raped by a police officer.
According to the Oslo-based human rights organization Iran Human Rights (IHR), 93 people were killed in the violent crackdown on the protests three weeks ago in Sahedan.
So far, more than 240 demonstrators have died in Iran.
The protests across the country, which have been going on for weeks, were sparked by the death of the young Kurdish woman Mahsa Dschina Amini.
The 22-year-old died in Tehran on September 16 after being arrested by the so-called moral police.
She allegedly wore her headscarf improperly.
Activists accuse the security forces of mistreating the young woman.
US government talks to Musk about Starlink installation
In order to be able to support the people of Iran and to circumvent state Internet control, Elon Musk's company SpaceX has meanwhile turned on.
According to a media report, the US government is in talks with Tesla boss and SpaceX CEO Elon Musk about installing the Starlink satellite broadband service in Iran.
The broadcaster CNN reported on Friday, citing people familiar with the matter.
Starlink could help the Iranian people bypass the regime's restrictions on internet access.
Neither SpaceX nor the US government initially commented.
Musk wrote on Twitter at the end of September that he wanted to activate the satellite broadband service for the people of Iran.
According to earlier information from the US Treasury Department, the government in Washington wants to expand Internet access for Iranians despite existing sanctions because of the nuclear program.