French President Emmanuel Macron on March 25 said France has information that a branch of Islamic State carried out the March 22 attack in a Moscow-area concert hall, warning Russia against using the attack in its war against Ukraine. France has intelligence that "it was an entity of Islamic State that planned the attack and carried it out," Macron told reporters after arriving on a trip to the French South American region of French Guiana, adding that "this particular group made several attempts [at attacks] on our own soil."