Unknown gunmen on Wednesday opened fire at several people in the mausoleum of Imam Khomeini, the late founder of the Islamic Republic, south of Tehran.
The gunmen attacked the mausoleum of Imam Khomeini, and fired at people.
Several people have been injured following the attack, state media reported.
Several attackers are behind the incident but the exact number of them is still unknown.
Following the shooting, a gunman blew himself and another was shot to death by police forces and a women was also arrested.
Terrorists had entered the mausoleum from its western gate.
Fire exchanges between terrorists and police forces are going on.