The French Indian Ocean territory of Mayotte has been hit by further heavy rains, causing flooding and mudslides, a month after Cyclone Chito devastated much of the island and killed dozens of people.

The islands were put on maximum alert Sunday morning as another storm passed. Authorities warned of the possibility of strong winds, flash floods and landslides.

Videos on social media showed downed power lines and some flooding. Local television reported that the southern village of Mbouini, the only settlement unaffected by Cyclone Chito, was now under water.

The latest storm, Dikledi, made landfall in northern Madagascar on Saturday, killing at least three people.

According to Météo France’s forecast, the storm passed about 100 kilometers (62 miles) south of Mayotte around 09:00 GMT on Sunday.

“The rain is starting to pour down,” Mayotte premier François-Xavier Bierville told French news channel BFMTV.

He added that they were causing the first flooding across the territory “and relatively severe mudslides”.

The premier said the island will likely remain on red alert until Monday night as heavy rain is expected to continue even after the storm passes.

At least 14,500 people have taken shelter in emergency shelters set up to protect themselves from the storm, BFMTV reported.

As of Sunday afternoon, the storm was moving away from Mayotte, Météo France reported. The system is expected to slowly intensify to tropical cyclone status over the next 24 hours while approaching the coast of Mozambique.

Forecasters said current forecasts did not predict the cyclone would make landfall in Mozambique, but the Nampula region was still expected to experience “severely degraded conditions”.

Mozambique is also recovering from Cyclone Chido, which killed 120 people in the country.

In Mayotte, one of France’s poorest regions, many residents live in shantytowns.

Officially, the archipelago has 320,000 inhabitants, but authorities estimate that between 100,000 and 200,000 undocumented immigrants also live there.

On December 14, Cyclone Chido became Mayotte’s worst storm in 90 years, bringing winds of up to 260 km/h (160 mph) and flattening areas where people lived in shacks with metal roofs .

Initial reports said hundreds of people had died, but the number was later revised to 39.