French police are reportedly probing an individual who threatened to attack Israeli President Isaac Herzog at the Paris Olympics.

According to French newspaper L’Équipe, an alert about the threat came via French government’s Pharos website, on which the public can report online content.

The threat was posted on X from the Val-de-Marne area, south-east of Paris, and is being investigated by the anti-terrorism police.

Herzog said in a statement he “has a lot of trust in the security infrastructure of the French and of the other states there, and also on the Olympic Committee, which has made an enormous effort.”

Herzog was preparing to participate in Friday’s Olympics opening ceremony after attending a reception with French President Emmanuel Macron, where he thanked his French counterpart for the warm welcome.

“I appreciate your work in the fight against antisemitism and your contribution to ensuring the ability of the excellent Israeli delegation to compete with respect and fairness in the Olympic Games,” Herzog told Macron, according to a statement from the president’s office.