Authorities in eastern Libya have said at least 2,000 people have been killed and thousands more are missing after a massive flood ripped through the city of Derna following a heavy storm and rain.

Ahmed Mismari, the spokesperson for the Libyan National Army (LNA) that controls eastern Libya, said in a televised news conference that the disaster came after dams above Derna had collapsed, "sweeping whole neighborhoods with their residents into the sea."

Mismari put the number of missing at 5,000 to 6,000.