The Belgian flag flys at half-mast at the city hall in Rotterdam
Police observe a minute of silencePeople observe a one minute's silence at the Place De La Bourse in honour of the victimsA girl writes a message on a wall in tribute to victims in BrusselsA Belgian flag is displayed on the Trevi Fountain in RomeJapanese policemen stand guard outside the Belgian Embassy in Tokyo, JapaThe spire of One World Trade center is illuminated in the colors of the French national flag, in New York - a tribute that has caused some confusion as the monument was not lit in Belgium's national coloursFrench PM Manuel Valls , Belgium King Philippe, European Commission President Jean-Claude Juncker, Belgium Queen Mathilde and Belgian PM Charles Michel attend pause at EU Commission headquartersSan Francisco City Hall is illuminated in the colors of the Belgium national flagThe Eiffel Tower is illuminated in the national colours of Belgium in tribute to the victims of the attacks in BelgiumA Belgian flag made of coloured lights appears on the Berleymont European building in BrusselsA woman arrives with flowers at a cordoned-off area near Maalbeek Metro Station, where one of the bombs was detonatedA woman embraces her children at The Place de la Bourse as she pays her respects to victimsFront pages following the attacksWomen light candles to place with flowers near Maalbeek metro station
