The message is clear: "Kill them all".
The Islamic State warns that there will be terrorist attacks in all the stadiums hosting the quarter-finals of the Champions League.
The stadiums in question are: Emirates Stadium (Arsenal-Bayern), Santiago Bernabéu (Real-City), Parc des Princes (PSG-Barcelona) and Metropolitano Arena (Atlético-Borussia).
In other words, three of Europe's main capitals are under threat today and tomorrow: London, Madrid and Paris.
Al Azaim, the Islamic State's propaganda outlet, published an image showing a person with his face covered and a gun drawn, with images of the four stadiums in question.
And the message: "Kill them all".
Security has already been stepped up in Madrid. The Madrid government itself has already activated special security arrangements for the two matches in the capital, with more than 3,000 agents.
Before the match between Bayern Munich and Borussia Dortmund in Germany on March 30, the Islamic State put the German police on alert after another terrorist threat.
