Evin prison, one of Iran's most notorious detention facilities, witnessed an unprecedented attack April 17 by security guards on political prisoners that has left dozens injured and four hospitalized.
The serious clash took place inside Ward 350, where many political prisoners are detained. The guards attempted to search prison cells, but the prisoners refused to exit their cells and demanded to be present for the searches, since they believe personal items are often stolen during this process. Upon the prisoners' refusal, the guards first threatened, then beat them.