Photo: a Belgian flag flies at half mast above the Royal Palace of Brussels on March 22, 2016 in the wake of terrorist attacks in the city.
A post from the Belgian monarchy's official Facebook account (translation via Google Translate):
The King and Queen are upset by the events at the Brussels National Airport and the Brussels metro. These acts are heinous and cowardly. The heartfelt thoughts of the King and Queen go first to the victims and their families and to the emergency services who make every effort to assist victims.
According to a tweet from the monarchy's Twitter account, reports that the Royal Palace was evacuated are not true.
UPDATE: This video contains a clip and English translation of King Philippe's televised remarks to the nation:
Visit the Royalty.nu News page to read more about royal reactions to today's terrorist attacks.