UEFA could play Euro 2016 behind closed doors if there is sufficient concern about terrorism, according to its executive committee vice-president Giancarlo Abete.

Authorities ruled out a cancellation or relocation of Euro 2016 after November's terror attacks in Paris, and France's Interior Minister, Bernard Cazeneuve, re-emphasised the importance of high security at the tournament in light of Tuesday's deadly explosions in neighbouring Belgium.

"Security is the primary problem for all of us," Abate told Radio 24. "The sporting event is only secondary to the issue of people's security. For every sporting event, there is somebody responsible for public order who is above any other person responsible for the organisation of the sporting event.

"The last two World Cups, first in South Africa and then in Brazil, were both characterised by the risk of incidents and social tension, for different reasons. It is something that unfortunately the world of sport has to live with.

"We need to keep our heads held high and keep faith in the values we trust. We need professionalism and sensitivity to take certain decisions, by staging as many events as possible and postponing or cancelling them in the moment in which significant risks emerge."