About 10,000 people are thought to be missing after major flooding in Libya, the International Federation of the Red Cross (IFRC) has said.
A quarter of the eastern city of Derna was wiped out by floodwaters after dams burst in a storm, with more than 1,000 bodies recovered so far.
It is estimated that as many as 2,000 people may have died in Derna alone.
Residents said they buried more than 200 bodies in one cemetery on Monday, while footage has showed dozens more bodies lying on the ground in a hospital yard.
The government in eastern Libya has declared the city a disaster zone.
Entire residential blocks were erased along Wadi Derna, a river that runs down from the mountains through the city centre.
Mediterranean storm Daniel led to heavy rainfall.
Multi-storey apartment buildings that stood well back from the river partially collapsed into the mud.
Tamer Ramadan, head of the IFRC in Libya, said: “We can confirm from our independent sources of information that the number of missing people is hitting 10,000 so far.
“The death toll is huge and might reach thousands.”
Conditions in Libya are “as devastating as the situation in Morocco”, Mr Ramadan said.
Othman Abduljaleel, east Libya’s health minister, said Derna was inaccessible and bodies were scattered across it, Libya’s state-run news agency reported.
“The situation was more significant and worse than we expected … An international intervention is needed,” he was quoted as saying.
Derna is about 560 miles east of the Libyan capital, Tripoli, and is controlled by the forces of powerful military commander Khalifa Hifter, who is allied with the east Libya government.
West Libya, including Tripoli, is controlled by armed groups connected to another administration.
