At least 18 people were killed, while at least 50 were wounded in the twin attacks, the Iranian Justice Ministry said.
According to media reports, the group of attackers managed to find their way into the parliament building by shelling security, killing at least two guards. None of the Iranian lawmakers or staff members were injured by the attack on the parliament. The shooting reportedly continued inside the building and one of the group's members committed a suicide attack.
The attack on the parliament happened when at least four gunmen, disguised as women, entered the visitors' hall of the building, opening fire on the security guards there. The assault has forced a lockdown on the legislature.
Separately, gunmen attacked the Imam Khomeini Mausoleum in Tehran, opening fire on people inside and wounding a number of them.
The Islamic State terrorist group has claimed responsibility for the attacks in Tehran on the Iranian parliament and the Imam Khomeini shrine, local media reported Wednesday. According to the Fars news agency, the group claimed responsibility for the attacks via their website.
According to the statement of the Interior Ministry, the first terror group, comprised of two people, entered the mausoleum at around 10:30 a.m. local time (0500 GMT). The first terrorist blew up his explosives but the second was killed during a firefight with security forces.
Concurrently with the attack at the mausoleum, the second terror team, which included four people, sought to enter the official building of the parliament but were confronted by security forces, the statement said.
The ministry said that one terrorist blew his explosives up and the three others were killed in shootouts during clashes with security forces as they were seeking to reach upper floors of the parliament building.
