In an exclusive interview with The Associated Press, Euro 2016 security chief Ziad Khoury said Tuesday that no-fly zones will be declared over all 10 stadiums as well as training grounds for the 24 teams at the June 10-July 10 tournament.
"We've noted the general proliferation of drone-usage in society," Khoury said in his Paris office.
"So no-fly zones will be defined over every training ground and every stadium, and in most stadiums and for most matches anti-drone measures which are quite innovative will be deployed, working with the state, which will interfere with drones and take control of them if they are spotted."
A training exercise in April in Saint-Etienne, one of the 10 Euro 2016 cities, imagined that a drone carrying chemical agents had plunged into spectators at the Geoffroy Guichard Stadium, which will host three group matches in June and one game in the knockout round.
"When you prepare an event of this size, you must imagine all scenarios, even the most unlikely," Khoury said.
He said authorities have no specific intelligence to indicate that drones are a threat, but are preparing for all eventualities.