Iran's central prison for detaining political prisoners was in flames Saturday, with inmates fleeing the facility and guards reportedly firing on them.
The notorious Evin Prison lies in the Iranian capital of Tehran and has long been used to house opponents of the regime. Hundreds of those protesting against the death of 22-year-old Mahsa Amini have been taken to the facility in recent weeks.
State media denies that the blaze had any connection to the protests, however.
At least four prisoners were killed and more than 60 were injured in the incident, according to the BBC.
Much of the prison is still intact Sunday now that the flames are largely under control. State authorities say the fire was restricted to a wing for "petty criminals."