What is the Islamic State group, and what attacks has it inspired by offshoots and lone wolves?

Here's a look at the Islamic State group, its current status, and some of the offshoot armed groups and so-called lone wolves that have killed under the Islamic State flag.

The FBI says it recovered the black banner of the Islamic State group from the truck that an American man from Texas smashed into New Year's partygoers in New Orleans' French Quarter, killing 15 people.

The investigation is expected to look in part at any support or inspiration that driver Shamsud-Din Jabbar may have drawn from that violent Middle East-based group or from any of at least 19 affiliated groups around the world.

U.S. President Joe Biden said Wednesday evening that the FBI had told him that "mere hours before the attack, (Jabbar) posted videos on social media indicating that he was inspired" by IS.

Routed from its self-proclaimed caliphate in Syria and Iraq by a U.S. military-led coalition more than five years ago, IS has focused on seizing territory in the Middle East more than on staging massive al-Qaida-style attacks on the West.

But in its home territory, IS has welcomed any chance to behead Americans and other foreigners who come within its reach. The main group at peak strength claimed a handful of coordinated operations targeting the West, including a 2015 Paris plot that killed 130 people. It has had success, although abated in recent years, in inspiring people around the world who are drawn to its ideology to carry out ghastly attacks on innocent civilians.

Here's a look at IS, its current status, and some of the offshoot armed groups and so-called lone wolves that have killed under the group's flag.

The main group also goes by IS, ISIS, or the Islamic State in Iraq and Syria.