France marked a day of mourning Monday for victims of Cyclone Chido, which devastated its poorest territory, Mayotte, over a week ago.

Cyclone Chido caused extensive damage on the French territory of Mayotte in the Indian Ocean, leaving several people dead, officials said Saturday, as the storm roared toward the east coast of Africa.

Cyclone Chido not only ravaged Mayotte’s infrastructure but also laid bare tensions between the island’s residents and its migrant population.