
BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : A European flag flies at half mast in front of the EU Berlaymont building in the centre of Brussels following multiple blasts in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : European flags fly at half mast in front of the EU Berlaymont building in the centre of Brussels following multiple blasts in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

BRUSSELS, BELGIUM - MARCH 22 : Police officers stand guard around the Maalbeek Metro station following a blast at the station in Brussels, Belgium on March 22, 2016. ( Dursun Aydemir - Anadolu Agency )

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)

Maelbeek metro station hit by explosion is close to EU institutions (Dursun Aydemir - Anadolu Agency)