At least ten people died over the weekend in southern Morocco when a bus was swept away by torrential floodwaters, while seven more passengers are still being searched for, the kingdom’s health ministry said on Monday.

A previous official count, which the authorities had made public on Saturday, spoke of two deaths.

“Ten people have died (…) and seven others are still missing after the accident of the bus that was swept away (by a torrent) at the Wed Tata level,” the district health directorate in Tata district said, according to the Moroccan official news agency MAP.

Torrential rains had already killed at least 18 people two weeks ago in desert-covered or semi-arid zones.

Morocco is facing its worst drought in almost forty years. It has already lasted six years and threatens the key sector of agriculture (it contributes 11 to 14% of GDP, employs more than a third of the working population).

Experts note that the heavy rains are allowing the water levels in some dams to rise on a local scale and to renew aquifers, but they add that it would take sustained rains to return to normal levels after such a long drought.