Two explosions have been reported in Brussels in the departures area of Zaventem airport.
Local media there were at least several wounded and dead was told by the Belgian fire service.
The origin of the explosions is unknown. The airport is being evacuated and has really been closed to flights.
The blasts come in November subsequent to the capture in Brussels the primary defendant in the Paris strikes, of Salah Abdeslam.
Pictures on social media revealed smoke rising amid reports of panic as people fled the airport, from among the buildings.
Rail transport to the facility has been prevented.
Other reports say at least one explosion was close to the American Airlines check-in place but this hasn’t been confirmed.
The Belgian broadcaster RTBF quoted as saying there were people injured or unconscious, a witness in the departure area, opposite the Sheraton hotel.
Niels Caignau, a Swissport worker, told Flemish broadcaster VRT: “I was on a rest and heard and felt a huge explosion – we’ve from here a view over the departure hall and saw a plume of smoke come out.
“The windows are entirely shattered. Folks went outside in shock. It does not appear good.”