Illustrations of the location of the blasts at Brussels' Zaventem airport.
Latest: Brussels transport authority says it has closed all public transport in Brussels.
Latest: The explosions at Brussels' Zaventem airport were carried out by a suicide bomber, Belgian broadcaster VRT said.
Camera phone video shows passengers being evacuated from the terminals at Brussels' Zaventem airport and out onto the tarmac.
The scene outside the Maalbeek subway station, where a blast was reported.