UEFA insists there are "no plans to play matches at Euro 2016 behind closed doors" following the terror attack on Brussels on Tuesday, but European football's governing body added it is "working on contingency plans and on multiple scenarios around crisis situations."
The issue of matches being played without supporters in France was raised by UEFA's own executive committee vice-chairman Giancarlo Abete following the atrocities in the Belgian capital which killed 34 people and injured over a hundred more.
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The Italian Abete told Radio 24: "Euro 2016 is the kind of event we can't delay or postpone.