Two French nationals who work at France's CNRS research institute have admitted responsibility for Monday's arson attack at the Russian consulate in Marseille, the Marseille prosecutor said on Wednesday.

A suspect threw an incendiary device that exploded outside the Russian Consulate in Marseille early Monday, authorities said, on the third anniversary of Russia’s invasion of Ukraine. No injuries were reported.

Three explosive devices were thrown against the wall of the Russian consulate in the French city of Marseille with two exploding, police said on Monday. Nobody was injured in the incident, which occurred on the third anniversary of the start of Russia's full-scale invasion of Ukraine.

Two projectiles were thrown at the perimeter wall of Russia's consulate in the southern French port city of Marseille on Monday, one of which exploded, a French security source said. It was not immediately clear if the projectiles cleared the wall.