Tehran's military prosecutor has opened an investigation into a widely circulated video showing an incident involving two teenage girls, state news agency, Judiciary linked-Mizan reported on August 7.

The development has sparked concern with the new reformist-led government of Masoud Pezeshkian who won on a ticket of relaxing social rules regarding the mandatory hijab which is law in Iran. 

"A special investigative branch has been assigned to handle the family's complaint," said Hojjatoleslam Karami, Tehran's military prosecutor, speaking on the sidelines of a crime prevention council meeting.

Karami stated that upon receiving the complaint, investigators were immediately ordered to gather all evidence, including footage from nearby CCTV cameras.

The prosecutor said that while investigators had ordered the extraction of video footage for the case file, they had not authorised its release to the complainant, their lawyer, or the media.

"The video circulating online appears to be from a different angle than the one in our case file," Karami added.

He also noted that the police inspectorate has cooperated in identifying and summoning the officers involved in the incident.

The case is currently in the investigation phase, with all necessary judicial orders issued to uncover various aspects of the incident, according to the prosecutor.

The video, which emerged on social media platforms, has sparked public debate about law enforcement conduct in Iran.

"There should be no violent confrontation with people, and the demands of all people, including those who, for any reason, did not vote in the elections, should be addressed." Iran's First Vice President Mohammad Reza Aref said to local media following the release of the video. 

Iranian civil society has been torn in recent years over the mandatory hijab since its introduction at the beginning of the Islamic Revolution, which forced women to wear a head covering. The case of Mahsa Amini, a 22-year-old Kurdish girl who visited Tehran and died at the hands of the police’s so-called Guidance Patrol in charge of forcing women to wear a head covering, sparked months of turmoil leading to the largest civil disobedience to date and collapse of the hijab rule in large parts of society in the country.

Liberal-leaning Iranians have, since her death, increasingly defied the Islamic Republic’s rules in cities such as Tehran and Shiraz. This direct challenge since the protests prompted MPs in the country to hurry another hijab law through parliament.