Calls for world unity following Brussels attacks

People gather at Bourse Square, Brussels, to pay tribute to the victims of terror attacks in Belgium (AAP) Source: People gather at Bourse Square, Brussels, to pay tribute to the victims of terror attacks in Belgium (AAP)

Australia is among the many countries expressing sadness and solidarity with Belgium following deadly attacks in Brussels Prime Minister Malcolm Turnbull has called the attacks "cowardly" as officials continue to investigate whether any Australians were caught up in the explosions.

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