Libya's prosecutor general has ordered the arrest of four more officials, bringing to 12 the number held as part of an inquiry into this month's flood that killed thousands. Flooding caused by hurricane-strength Storm Daniel tore through eastern Libya on September 10, leaving at least 3,893 people dead and thousands more missing. On Monday, the office ordered the arrest of eight officials, including Derna's mayor, who was sacked after the flood. Libya has been wracked by division since a NATO-backed uprising toppled and killed longtime dictator Moammar Gadhafi in 2011. On Friday, the eastern authorities said they would begin paying compensation to people affected by the disaster, which a U.N. agency has said uprooted more than 43,000 people.