Iran protests: at least 450 arrested in northern province

Protests sparked by the death in police custody of 22-year-old Mahsa Amini have spread across the country. They have been met with internet shutdowns and violent repression.

The official death toll in the unrest is 41, and human rights groups say the true number may be higher.

Amini was visiting Tehran when she was arrested by morality police who took issue with the way she had veiled her hair. While the police maintain she died of natural causes, her family say she was tortured and killed.

Despite efforts to stop Iranians from accessing apps such as Instagram and WhatsApp, videos of people allegedly killed during the protests have been spreading on social media.

Videos showed protests on Sunday night in Tehran and cities including Yazd, Isfahan and Bushehr.

Other reports said students at three universities in Tehran were refusing to attend lessons.

Agence France-Presse contributed to this report