Brussels Enters Lockdown, Warns of "Paris-Style" Attack, Airport and Sporting Events Closed Officials in Belgium have "precise information" that Brussels faces a "Paris-Style" Attack. In response Brussels Enters Lockdown . Brussels faces an imminent threat of a Paris-style Islamic State terrorist attack, authorities warned, as the city shut down its metro system and shopping malls, canceled sporting and cultural events and told people to avoid gathering in large groups.“ We have precise information that outlines the risk of an attack similar to the one that unfolded in Paris ,†Belgian Prime Minister Charles Michel told a press conference Saturday morning in Brussels.