French authorities say an incendiary device has exploded outside the Russian Consulate in Marseille on the third anniversary of Russia’s invasion of Ukraine.

Two people have been arrested in relation to the arson attack on the Russian consulate in Marseille on Monday, said the Marseille prosecutor.

Three projectiles were thrown over the perimeter wall of Russia's consulate in the southern French port city of Marseille on Monday, two of which exploded, police said.