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Special police forces stand guard outside the Council Chamber of Brussels on March 24, 2016 during investigations into the Paris and Brussels terror attacks. More than 30 people have been identified as being involved in a network behind the Paris attacks on November 13, with links now established to this week's bombings in Brussels. AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD        (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
Special police forces stand guard outside the Council Chamber of Brussels on March 24, 2016 during investigations into the Paris and Brussels terror attacks. More than 30 people have been identified as being involved in a network behind the Paris attacks on November 13, with links now established to this week's bombings in Brussels. AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD        (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)

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Sources: ISIS terrorists planned to attack soccer championships

European intelligence officials say the terror cell that attacked the Brussels airport and subway system had originally planned to attack France. CNN's Jim Sciutto reports.

Sources: ISIS terrorists planned to attack soccer championships

European intelligence officials say the terror cell that attacked the Brussels airport and subway system had originally planned to attack France. CNN's Jim Sciutto reports.