The death toll from Cyclone Chido's rampage through the French overseas territory of Mayotte remained unclear on Wednesday, with shantytowns that were home to undocumented migrants flattened and many areas still inaccessible.

Hundreds are feared dead after the storm razed entire neighborhoods in Mayotte, a series of islands off the eastern coast of Africa, before unleashing its destructive force on Mozambique.

Rescuers searched desperately for survivors as they sought to assess the full scale of devastation wrought by Cyclone Chido on the French overseas territory of Mayotte, which emerged on Wednesday from a first night spent under curfew.