30 March 2015 :

Iran secretly hanged at least 12 inmates in prisons in cities of Shiraz and Mashhad.
A group of five prisoners were hanged in a prison in the city of Mashhad in northeast Iran while another six were collectively hanged in Pirnia Prison in the city of Shiraz in southern Iran. On the same day, another prisoner was also hanged in Adelabad Prison in the same city.
In Shiraz, the prisoners were transferred to solitary confinements two days prior to the Iranian New Year (Nowruz), therefore, the victims spent the New Year’s day in isolation awaiting execution.
The religious dictatorship ruling Iran has refrained from publishing any report or information on the prisoners.