European football's governing body, UEFA, has said it is aware of a terror threat made regarding this week's Champions League quarterfinal ties, but it said the matches will still go ahead as planned.
A social media post, purporting to be from the Islamic State group, suggested it planned to attack the Champions League quarterfinal first-leg ties this week.
On Tuesday, Arsenal host Bayern Munich at the Emirates Stadium in London and Real Madrid play Manchester City at the Bernabéu stadium in Madrid, while on Wednesday, Paris Saint-Germain face Barcelona in Parc des Princes in Paris and Atlético Madrid host Borussia Dortmund at Madrid's Wanda Metropolitano Stadium.