"Islamic State Claiming Attacks Reflects Influence Obsession," associated press

ISIS militants frequently take credit for terror attacks on U.S. soil, despite only having loose, if any, ties to the attackers. Karen J. Greenberg, director of the Center on National Security at Fordham Law said that in many cases, “if they find out the person is Muslim—that alone might be enough for [ISIS] to claim credit.” Many believe ISIS is quick to take credit for attacks in order to catch headlines and drive recruitment, even if it is unclear whether the person was directly in contact with the group or adheres to the group’s core beliefs.