Illustration shows a police ribbon at the closed metro station Arts-Loi/ Kunst-Wet in Brussels after an explosion at Metro Maalbeek-Maelbeek, Tuesday 22 March 2016. At least 13 people have been killed after two explosions occurred this morning in the departure hall of Brussels Airport. The Brussels metro stations have been evacuated after explosions at Schuiman and Maelbeek-Maalbeek. Government sources speak of a terrorist attack. The terrorist threat level has been heightened to four across the country.
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