Search teams combed streets, wrecked buildings and even the sea on Wednesday to look for bodies in a coastal Libyan city where the collapse of two dams unleashed a flood that killed at least 5,100 people.The Mediterranean city of Derna has struggled to get help after Sunday night's deluge washed away most access roads.Aid workers who managed to reach the city described devastation at its centre, with thousands still missing and tens of thousands left homeless.

Search teams combed streets, wrecked buildings and even the sea on Wednesday to look for bodies in a coastal Libyan city where the collapse of two dams unleashed a flood that killed at least 5,100 people.The Mediterranean city of Derna has struggled to get help after Sunday night's deluge washed away most access roads.Aid workers who managed to reach the city described devastation at its centre, with thousands still missing and tens of thousands left homeless.