On 22 March 2016 , the Islamic State bombed Maalbeek metro station in a terrorist attack that coincided with another bomb attack at Brussels Airport . The bombing at Maalbeek station killed twenty people . The incident prompted the temporary closure of the entire system , and a major reduction in service for several weeks . A fundamental review of security procedures on the metro is underway as of 2016
a terrorist attack
2016 Brussels bombings
Brussels Metro