But the attacker was on a state watchlist of people known as a potential security risk, a police source said. The “Fiche S” contains thousands of names and only a small number are actively monitored. He was described by the police source as a Russian-born Chechen but by some French media as a Russian-born Ingush. A security source said an elder brother of the alleged assailant was serving time in prison for links to Islamist militant networks and glorification of terrorist acts.