UN chief Ban Ki-moon condemned Tuesday’s deadly attacks in Brussels, calling them "despicable" and demanding those responsible face justice.

UN chief Ban Ki-moon condemned Tuesday's deadly attacks in Brussels, calling them "despicable" and demanding those responsible face justice.

"The despicable attacks today struck at the heart of Belgium and the center of the European Union," said a statement from his office. "The secretary-general hopes those responsible will be swiftly brought to justice."