insert_link World Police in London, Paris and Madrid are on high alert ahead of this week’s Champions League Quarter Finals, after an apparent threat by Islamic State. Police in London, Paris and Madrid are on high alert ahead of this week's Champions League Quarter Finals, after an apparent threat by Islamic State. Organisers say they are aware of the threats, but that the matches will go ahead as planned. Simon Gaitán reports. todayApril 10, 2024 11