Abdol-Hossein Rouhol-Amini served as a campaign adviser to presidential candidate Mohsen Rezaei, a conservative.
CNN: Iran prisoner beaten to death, coroner says
2.
Khamenei himself met with Rouhol-Amini's father, Abdol-Hossein, on Sunday and vowed that "the system has no intention to forgive or be courteous to any wrongdoers, " IRNA reported.