The arrests were made in Alborz province's Fardis town, reports Xinhua news agency.
The seven persons were affiliated to terrorist groups, the police added.
On Friday, Iran's Intelligence Ministry said since the attack on Wednesday security forces have arrested 41 individuals linked to the Islamic State (IS) in Tehran, Kermanshah, Kurdistan and West Azarbaijan provinces.
The two simultaneous attacks were carried out by IS militants in Iran's Majlis (parliament) and the mausoleum of the founder of the Islamic republic Ayatollah Khomeini.
Six attackers were killed by Iran's security forces.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.
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