The attacks took place after two explosions ripped through a route leading to the burial site of Iran’s anti-terror icon, Lt. Gen. Qassem Soleimani, as people had gathered to mark the fourth anniversary of his assassination by the United States in 2020.  

In the wake of the attacks, national mourning day has been announced in Iran, and Imam Reza shrine in the northeastern Iranian city of Mashhad has raised black flags.