Authorities in Iran shut down a dental scientific conference in the northeastern city of Mashhad last week because female participants were not wearing mandatory head coverings.
In a video shared on social media, a conference organizer can be seen apologizing to the attendees and asking them to vacate the venue.
Journalist Hedieh Kimiaee reported that police officers forcefully shut down the event and compelled all attendees to exit the hall where it was taking place.
Around 600 dental specialists participated in the September 21 conference, including guests from South Korea.
In recent months, the government has launched an extensive campaign to enforce mandatory hijab regulations on Iranian women and girls.
On September 23, the police commander in northern Gilan province announced that 1,094 businesses have been sealed across the province over the past five months for "non-compliance with Islamic laws."