Police are hunting a man believed to have been part of a team of extremists who attacked Brussels airport.
The suspect has been named as Najim Laachraoui by Belgian newspaper DH. Laachraoui was seen alongside two others, brothers Khalid and Brahim El Bakraoui, wheeling heavy bags. Belgium's prosecutors says the two likely killed themselves in a twin suicide attack while the final man fled.
Belgian police have appealed to travellers who had been at the airport and metro station to send in any photographs taken before the attacks in their efforts to identify the bombers.
At least 34 people have been confirmed dead after the attacks and another bombing on a metro train. More than 200 have been injured some of them seriously.
Citizens of the United States, Spain and Sweden were among the injured according to their governments.
Travellers fled in terror after the two blasts ripped through the departure terminal early Tuesday morning.
Around half an hour later, another bomb was detonated on a commuter train as it left a station serving many of the city's European Union institutions.
Daesh has claimed responsibility for the attacks.
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