Libya's flood-ravaged Derna in grisly hunt for thousands still missing

DERNA - Emergency teams on Friday kept up their search for the thousands still posted as missing from the tsunami-sized flash flood that swept the Libyan port city of Derna, killing at least 4,000 people.

The enormous surge of water burst two upstream dams late Sunday and reduced Derna to an apocalyptic wasteland where entire city blocks and untold numbers of people were washed into the Mediterranean.

An AFP photographer said central neighbourhoods on either side of the river, which normally dries up at this time of year, looked as if a steam roller had passed through, uprooting trees and buildings and hurling vehicles onto the port's breakwaters.

"Within seconds the water level suddenly rose," recounted one injured survivor who said he was swept away with his mother in the late-night ordeal before they both managed to scramble into an empty building downstream.

Hundreds of body bags now line Derna's mud-caked streets, awaiting mass burials, as traumatised and grieving residents search mangled buildings for missing loved ones and bulldozers clear streets of debris and mountains of sand.

"This disaster was violent and brutal," said Yann Fridez, the head of the Libya delegation of the International Committee of the Red Cross, which had a team in Derna when the floodwaters hit.

"A wave seven metres high wiped out buildings and washed infrastructure into the sea. Now family members are missing, dead bodies are washing back up on shore and homes are destroyed."

The floods were caused by hurricane-strength Storm Daniel, compounded by the poor infrastructure in Libya, which was plunged into turmoil after a NATO-backed uprising toppled and killed longtime dictator Moamer Kadhafi in 2011.