There are no plans to cancel Euro 2016 following the terror attacks in Paris, according to the tournament's president, Jacques Lambert.
The French national football stadium, the Stade de France, was one of a number of areas targeted during the attacks, prompting fears for fans' safety at games next summer.
Some, including the French Football Federation's president Noel Le Graet, have now questioned the safety of hosting the Euros in France.
"For the Euros, there was already a big worry. Today it's obviously even stronger," Le Graet said.
However, Lambert insists the tournament will go ahead as planned, although he acknowledged the need for increased security at games.
"The risk had gone one level up in January, it has just gone higher," Lambert told French radio station RTL.
"We will make the decisions we need to make so that the Euro finals can be held in the best security conditions. Security in stadiums works well, the risk is more in the streets, in spontaneous gatherings.
"Wondering whether Euro 2016 must be cancelled is playing the game of the terrorists."