FNA reports said four unidentified armed assailants started a shooting spree at Imam Khomeini’s shrine this morning.
Three of the assailants shot tens of rounds at the people visiting the shrine, while the fourth one detonated himself in a suicide attack in front of a police station opposite the shrine.
The law enforcement and guards at the shrine said they have also defused another suicide vest at the scene.
Meantime, the sound of a blast has been heard at an underground near the shrine.
Reports at 07:10 GMT said that one of the assailants has been killed in the clashes, a second one has committed suicide after swallowing a cyanide capsule, and the third one was a female and captured after clashes with the law enforcement troops.
The attack took place along with a similar incident at the parliament building.
The ISIL has taken responsibility for both attacks.