Police have killed four Islamic State group-linked gunmen in Iran's south, IRNA reported.

According to the chief of police of Hormozgan province, Genereal Azizollah Maleki, his forces killed the gunmen on Sunday in a shootout near the town of Roudan, 1200km southeast of Tehran. 

Maleki said police confiscated an IS flag and four machine guns, bullets and some explosives.

He added that two of the four were foreigners.

On June 7, gunmen and suicide bombers carried out attacks on Iran’s parliament and the mausoleum of revolutionary founder Ruhollah Khomeini in capital city Tehran, killing 17 and injuring over 60  people.