Scenes of panic as passengers fled through dust and debris ensued after a double bomb attack at Brussels airport on Tuesday (March 22).

At least 26 people were killed in the attacks at the airport and on a rush-hour metro train in the Belgian capital, triggering security alerts across western Europe and bringing some cross-border transport to a halt.

A witness said he heard shouts in Arabic shortly before two blasts struck a packed airport departure lounge at Brussels airport. The federal prosecutor said one of the blasts was probably triggered by a suicide bomber.

The Belgian health minister said 11 people were killed in the airport bombing and 81 wounded.

The blasts at the airport and metro station occurred four days after the arrest in Brussels of a suspected participant in November militant attacks in Paris that killed 130 people.