Public safety officials in England, France and Spain said Tuesday that they would step up security for matches this week in the Champions League, Europe’s marquee soccer competition, after ISIS-related groups called for violent attacks on the contests. The first of four quarterfinal matchups were scheduled in London and Madrid on Tuesday, and were to feature some of the top clubs in world soccer: Spain’s Real Madrid; the English giants Arsenal and Manchester City; and Germany’s Bayern Munich. Two other high-profile matches will take place on Wednesday in Paris and Madrid. “We don’t know what location might be particularly targeted, neither in what conditions,” the French interior minister, Gérald Darmanin, told reporters in Paris. The ministry said security measures at the matches in Madrid had been increased and additional agents deployed.

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Persons: Gérald Darmanin Organizations: Champions League, ISIS, Spain’s, Arsenal, Manchester City, Germany’s Bayern Munich, ”, El Mundo Locations: England, France, Spain, London, Madrid, Spain’s Real Madrid, Paris, Spanish, El