Two explosions targeted the main hall of Zaventem Airport at around 8:00 am. More than a dozen people were lying on the pavement outside the station, being treated by emergency service for facial wounds.
There were chaotic scenes at the airport as passengers fled in panic, with a thick plume of smoke rising from the main terminal building.
The blasts triggered a transport shutdown, with all flights halted in and out of the airport on Brussels' northwest outskirts and the city's metro system suspended.
Jean-Pierre Herman embraced his wife Tankrat Paui Tran, who he had just gone to collect from the airport after her flight from Thailand, as he described the scene.
UPDATE: Several feared dead as Brussels airport, metro rocked by explosions
The video below showed devastation inside the departure hall with items scattered across the floor.
A third blast hit the Maalbeek metro station, near the European Union's main buildings, just as commuters were making their way to work in rush hour. TV images showed black smoke billowing from the station entrance.
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The metro operator later has since said all metro stations are closing down.
Below are scenes in the metro as passengers fled following the bombing.