Two explosions have rocked Zaventem airport, in Brussels, Belgium as people queued to check in, the first one going at around 09:00 (08:00 GMT).
Belgian broadcaster VRT says at least 13 people were killed and 35 were wounded at the airport.
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Shots were heard before the explosions, which appear to have struck near the American Airlines and Brussels Airline check in desk.
Some time later there was also a blast at Maalbeek metro station, very close to the city’s main European Union buildings.
The Belgian government has raised the terror alert level to 4 across the country, the highest level.