Scenes of destruction in Brussels following 3 explosions

At least 30 people are dead and many more injuredafter several explosionsat the airport and in the subway systemof the Belgian capital. ISIS has claimed responsibility for the attack.

An unidentified traveller lies on the ground in the smoke-filled terminal at Zaventem airport. (Ralph Usbeck via Associated Press)

A man with blood stains on his sweater leaves theZaventem airport.(Dirk Waem/AFP/Getty Images)

Passengers walk awayfrom the airport after the explosions.(Sylvain Lefevre/Getty Images)

A victim receives first aid from rescuers on Tuesday, following an explosion at Maelbeek metro station in Brussels. (EmmanuelDunand/AFP/Getty Images)

Those injured in the attacks are being treated at the military hospital in Neder-over-Heembeek in northern Brussels. (EPA)

Passengers leave a train in the Brussels metro system.(Evan Lamos/EurActiv/Associated Press)

Belgian emergency vehicles attend the scene on Rue de la Loi, near the Maelbeekmetro station.(Olivier Hoslet/EPA)

A television imageshows aBelgiansoldier and police carrying an injured person from themetro station. (EPA)

A private security guard helps a wounded woman outside the metro station.(Michael Villa/AFP/Getty Images)

Belgian police carry out searches inside a metrostation. (Nicolas Maeterlinck/AFP/Getty Images)

Forensic policeenter the metro station. (Philippe Huguen/AFP/Getty Images)

According to BelgianFrench-language daily newspaper LaDernireHeure, thisCCTV security image shows three men suspected of participating in the bombings atZaventem airport near Brussels.(La Dernire Heure)

Windows were shatteredat Zaventem airport,where two explosions took place.(Patrik Stollarz/AFP/Getty Images)

An injured woman leaves theairport. (David Crunelle/Associated Press)

Two injuredwomen wait for assistance at theairport. (Ketevan Kardava/Georgian Public Broadcaster/Associated Press)

Passengers and airport staff gather outsidethe terminal building at theairport. (Oliver Hoslet/EPA)

An injured man lies on the ground inside the airport. (Ketevan Kardava/Georgian Public Broadcaster/Associated Press)

Belgian police stand guard at Midi train station in Brussels. (Christian Hartmann/Reuters)

A man kneels before a makeshift memorial outside the stock exchange in Brussels. (Geert Vanden Wijngaert/Associated Press)

A young girl lights a candle at the Place de la Bourse in Brussels. (Carl Court/Getty Images)

CBC's Nahlah Ayed hasbeen tweetingfrom Brussels: