The French minister for interior has assured that security will be reinforced around the stadium when Paris Saint Germain PSG take on Barcelona in the first leg of the UEFA Champions League quarter-finals.

This comes at the back of a suspected terrorist threat publication by an Islamic group. Many European countries are on their highest possible terror warning level after Islamic State claimed responsibility for the attack on a concert venue in Moscow last month which killed more than 140 people.

Minister Gerald Darmanin said there had been “a clear threat publicly expressed by the Islamic State”.

“The police, whom I spoke to very early this morning, have considerably reinforced the security measures,” he added.

UEFA said all the matches would be played.

“UEFA is aware of alleged terrorist threats made towards this week’s UEFA Champions League matches and is closely liaising with the authorities at the respective venues,” the statement said.

“All matches are planned to go ahead as scheduled with appropriate security arrangements in place.”

The pro-IS channel that published the calls for violent attacks featured images of the Emirates Stadium, the Santiago Bernabeu and Metropolitano stadiums in Madrid, as well as the Parc des Princes in Paris.

A French expert on the online communication of jihadist groups told AFP they came from Al-Azaim, the mouthpiece for Islamic State’s branch in Afghanistan (ISKP), which is suspected of being behind an attack on a concert venue in Moscow last month which killed more than 140 people.

However the expert, who was speaking on condition of anonymity, said the posts were aimed at inciting others, rather than detailing a specific attack.