The metro, museums, most cinemas and many shops will stay closed on Monday in the usually bustling EU capital where many people opted to work from home. School and university classes were also cancelled for almost 300,000 students.
Prime Minister Charles Michel said the city of 1.2 million will remain on Belgium's fourth and highest level of security threat, meaning the threat of an attack was "serious and imminent".
. A soldier patrols around a security perimeter while tourists take a photo with the Manneken Pis statue on Nov. 22.
Interior Minister Jan Jambon told RTL radio, however, that Belgium's capital was still operating. "Apart from the closed metro and schools, life goes on in Brussels, the public sector is open for business today, many companies are open," Jambon said on Monday morning.
. A cafe remains empty on Nov. 23.
Belgium has been at the heart of investigations into the Paris attacks after French law enforcement bodies said two of the suicide bombers had lived there. Three people have been charged in Belgium with terrorist offences, including two who traveled back with Abdeslam from Brussels.
. A woman walks past the closed entrance to the metro station "porte de namur" on Nov. 23.
It was not immediately clear how long Brussels would remain on lockdown as authorities continued to search for Abdeslam.
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