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.

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 French scientists admitted to carrying out an attack on the Russian consulate in Marseille using improvised explosive devices, the local newspaper La Provence reported early Wednesday, citing unnamed sources.