The attacker opened fire at the guards, then escaped the building and is now on the run, FARS news agency reported.

??فیلم/ التهاب در خیابان اطراف #مجلس در بهارستان، در پی تیراندازی افراد ناشناس pic.twitter.com/IF10z90S2e

— خبرگزاری فارس (@FarsNews_Agency) 7 июня 2017 г.

The agency added that two civilians and a guard from Islamic Revolutionary Guard Corps (IRGC) were injured in the shooting.

A male assailant was arrested while on the run at the parliament’s hallway, Akbar Ranjbarzadeh, a senior member of the parliament’s Presiding Board told Farsnews.

In the meantime, Elyas Hazrati, a senior MP, told the agency that there were at least three attackers who carried two Kalashnikov rifles and a handgun.

However, Fars cited some members of parliament who claimed that shooting continues in the building.