Belgian officials say 31 people were killed and 187 were wounded on Tuesday in two explosions at the Belgium airport and one at a city subway station.
Two explosions went off in Brussels Zaventem Airport's Departures Hall, killing at least 11. A second attack occurred about one hour later at the Maelbeek Metro Station near the headquarters of the European Union. Officials said 20 were killed at the metro station, and at least 106 injured.
Both the airport and the city's metro system were immediately shut down.
The attacks come just days after the arrest of Paris terror attack suspect Salah Abdeslam on Friday.
Celebs took to Twitter to react to the news. See some of the messages below:
Terrible news from Brussels. Praying for the victims and their families. Horrible.