14 November 2018 :

Iran has executed the 22 people it arrested in late September for alleged involvement in a deadly shooting at a military parade in the southern city of Ahvaz, multiple sources told 2 rights groups on 11 November 2018.
"It seems that authorities executed all of them on 8 November 2018," one of the sources told Iran Human Rights (IHR). After the executions, the group said, authorities "told the prisoners’ families" of the hangings in Ahvaz Central Prison (ACO) and warned them "against public mourning."
Multiple activists also told a 2nd group, Iran Human Rights Monitor (I-HRM), that Ahvaz's Ministry of Intelligence Office phoned some of the families of the prisoners and informed them of their relatives' executions.
On Sep. 22, 4 men dressed in military uniform opened fire on a viewing stand where Iranian officials were seated to observe a procession held yearly to mark the start of the 1980-88 Iran-Iraq war. The attack resulted in the deaths of 25, 12 of which were members of the elite Islamic Revolutionary Guard Corps (IRGC). Dozens more were injured.