Banksy is believed to have taken his message on migration to Paris, which has seen seven works attributed to the provocative British street artist.
The works attributed to Banksy have been discovered in recent days, including one near a former centre for migrants at the city's northern edge that depicts a child spray-painting wallpaper over a swastika.
Nicolas Laugero Lasserre, editor of the Artistikrezo website that broke the story, said he heard a few weeks ago through contacts in the French street art world that Banksy was planning a trip.
He said he started looking for the works and came across the one in the northern Porte de la Chapelle neighbourhood. The same wallpaper stencil was used in a 2009 exposition at the Bristol Museum, he said, describing it as "a real signature" of the elusive artist.