Belgian prosecutors have charged a man with terrorist offences, in connection with Tuesday's attacks in Brussels that left 28 people dead.
He was named as Faycal C and was arrested on Thursday.
At least half the victims died at the airport, the rest in an attack on the metro in suicide bombings claimed by so-called Islamic State (IS).
Zaventem - Brussels international airport - will not reopen before Tuesday, authorities have announced.
Meanwhile a demonstration against the attacks, planned for Sunday in central Brussels, has been cancelled after a request from the authorities.
Organisers said people's security was a top priority.
Brussels attacks: Man charged with terrorist offences - BBC News