Members of Sunni groups in Iran however have been active in what the authorities describe as terrorist activities . Balochi Sunni Abdolmalek Rigi continue to declare the Shia as '' Kafir '' and '' Mushrik '' . These Sunni groups have been involved in violent activities in Iran and have waged terrorist attacks against civilian centers , including an attack next to a girls ' school according to government sources . The " shadowy Sunni militant group Jundallah " has reportedly been receiving weaponry from the United States for these attacks according to the semi-official Fars News Agency . The United Nations and several countries worldwide have condemned the bombings . '' ( See 2007 Zahedan bombings for more information ) '' Non-Sunni Iranian opposition parties , and Shia like Ayatollah Jalal Gange’i have criticised the regime 's treatment of Sunnis and confirmed many Sunni complaints
2007 Zahedan bombings
2007 Zahedan bombings
Shia–Sunni relations