35 people have been killed and dozens injured in attacks at Brussels international airport and a city metro station.
Two explosions at Zaventem airport at about 8 AM, with 11 people reported killed.
Another explosion struck Maalbeek metro station near EU headquarters an hour later, leaving about 20 people dead.
The Islamic State (IS) group said it was behind the attacks in a statement issued on the IS-linked Amaq agency.
Three days of national mourning have been declared.