Twin attacks on the Iranian parliament and Ayatollah Khomeini's mausoleum in the capital, Tehran, have killed at least 12 people and injured many more. <br />The assault on the parliament building appears to be over, after hours of intermittent, audible gunfire there. A suicide bomber died at the mausoleum. <br />Iranian officials say they managed to foil a third attack. <br />The so-called Islamic State group (IS) has claimed it carried out the attacks, which would be a first in Iran. <br />IS later posted a video which showed what it claimed was footage from inside the parliament building.
