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.
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.