Iran's Intelligence Ministry said Wednesday's massacre was perpetrated by Iranians loyal to the Islamic State militant group who fought in Iraq and Syria.
The statement follows the first major ISIS attack on Iranian soil.
After being attacked, a coalition of forces backing the Syrian government and fighting the Islamic State militant group has warned the U.S. not to cross "red lines."
Police are investigating links between the gunman Yacqub Khayre, who was shot dead, and the militant group.
The attackers ploughed a van into pedestrians on London Bridge before running into Borough Market with knives and stabbing people at random.
The attack by Islamist militants on Marawi had "all the hallmarks of a professional military operation."
Murad has joined forces with human rights lawyer Amal Clooney to fight for an investigation into ISIS's crimes against humanity.
Air Force veteran Tairod Pugh said he's Muslim, he's black and he's a soldier, but the judge said nothing excused his attempt to join the Islamic State militant group.
The army has used airstrikes and street combat, yet still the Maute Group Islamist militants fight on.
A report by The Wall Street Journal claims French intelligence gave Iraq names and faces of French citizens in the Islamic State group to be killed.
Until the West crushes ISIS’s ideology, bombings like the one in Manchester are going to continue—and maybe become more common.
“it just doesn't feel real.” Hundreds gathered for a vigil to remember the 22 victims of Monday’s attack.
The president's decision to share ISIS intelligence with Russia may have re-energized calls for his removal, but "the legal reality is that we're in uncharted territory," a constitutional law expert says.
"Everybody is going to start second-guessing whether or not they can trust Trump," an analyst tells Newsweek.
With less than 1,000 militants left to defend its shrinking pocket of control in Mosul, the Islamic State group faces total defeat by the Iraqi army and allies.
The case appears to have frightening similarities to deadly attacks in Boston and Orlando.
ISIS published an article titled "Just Terror Tactics" that, in part, describes how fighters can obtain weapons in the U.S.
The U.S.-backed, majority-Kurd Syrian Democratic Forces and the Russia-backed Syrian military are separately threatening ISIS's final major strongholds.
The Army will send 1,500 paratroopers from the 1st Brigade Combat Team, 82nd Airborne Division to "train, advise and assist" in Afghanistan.