PARIS, May 13, 2018 (Reuters) - An assailant killed a passer-by in a knife attack that also wounded four others in the heart of Paris late on Saturday before he was shot dead by police, French authorities said. So-called Islamic State (IS) later said one of its "soldiers" had carried out the attack on Saturday evening. Judicial sources told French media the attacker was a man born in 1997 in the southern Russian republic of Chechnya. Interior Minister Gérard Collomb said the victim of the attack was a 29-year-old man, but gave no further details. The country has been on high alert amid a series of attacks, commissioned or inspired by the Islamic State militant group, that has killed more than 240 people since 2015. France "will not yield an inch to the enemies of freedom," President Emmanuel Macron said after the attack, praising officers for "neutralizing the terrorist."