The attack on a soldier outside the Louvre Museum took place only hours before leaders of Paris' bid for the 2024 Olympics unveil their final candidate files.

French officials have repeatedly dismissed security concerns over the bid despite the wave of attacks that have left more than 200 people dead in the country over the past two years.

The attack will raise more questions before Friday's ceremony near the Eiffel Tower, although bid officials claim the French capital has the experience needed to organize and protect major events if it gets the 2024 Games.

Speaking outside the Louvre, Paris Mayor Anne Hidlago, who will attend the ceremony alongside athletes and other bid leaders, said all big cities in the world are under threat. She said that "there is not a single one escaping that menace."

Paris, which hasn't hosted the Olympics since 1924, is competing against Budapest and Los Angeles. The International Olympic Committee will choose the host city in September.