The French territory of Mayotte is on red alert again with another cyclone heading toward the islands off Africa that were devastated by their worst storm in nearly a century last month.

Authorities will put the French overseas territory of Mayotte on red alert late on Saturday, Prefect Francois-Xavier Bieuville said, as a tropical storm nears the Indian Ocean archipelago that was devastated by a cyclone last month.

The French Indian Ocean territory of Mayotte has been hit by further heavy rains, leading to flooding and mudslides, one month after Cyclone Chido devastated large parts of the islands and left dozens dead.