The IRGC commander repeated for several times that the Aviation Organization was not to blame. All the blame must be pinned on Armed Forces & and those who failed to control the situation (no-fly zone perhaps).
Key point in his remarks was reports of cruise missile fired at Iran
https://twitter.com/Khaaasteh/status/1215945675436961792
RGC Aerospace Cmdr: I informed Iranian officials on Wednesday morning, and said we speculate our own passenger plane has been shot down. But the General Staff of Armed Forces quarantined all those who knew about it, and decided to declare it later
https://twitter.com/Khaaasteh/status/1215943540167057410