17 November 2015 :

Four prisoners were reportedly hanged in the morning at Karaj Central Prison on drug related charges.
According to close sources, the names of the prisoners are: Kambiz Shahbazi, Iraj Tizmaghz, Mehdi Aflaki, and Cyrus Cheshmeh. 
According to the human rights group, HRANA, the four prisoners were transferred from their prison cells to solitary confinement last Wednesday (November 4) in preparation for their executions. 
Their family members were reportedly allowed to visit them for the last time on Friday November 6. Iranian official sources have been silent on these four executions.