The Islamic State (IS) threatened to attack Saudi Arabia after accepting responsibility for attacking Iran.

US-based Intelligence Group Site Intelligence, which has been monitoring the international terrorist organization, said in the information.Iran's capital Tehran parliament and the shrine of Ayatollah Khomeini killed 17 people and wounded many people in guns and suicide attacks on Wednesday. These two attacks claimed responsibility for IS. In addition to this, the militant group threatened to strike more Shiite-dominated Iran.Site Intelligence website released a video of ISIS held before the Tehran attack. In this, the five militants of ISIS are seen threatening Iran's Shiite. They also threaten Saudi Arabia - then your turn is coming.