At least 11,300 people have died and another 10,100 are missing from the coastal city of Derna one week after Storm Daniel hit northeastern Libya, the UN Office for the Coordination of Humanitarian Affairs reported.
An estimated 170 people have been killed as a result of the flooding elsewhere in the country, and more than 40,000 people have been displaced, the UN report said, citing the latest data from International Organisaton for Migration.
Figures are expected to rise as search-and-rescue efforts continue to look for survivors.
Libya's official news agency reported that floods completely destroyed at least 891 buildings in Derna, according to figures from a team assigned by the Libyan National Unity Government.
An additional 211 buildings were partially damaged and 398 others were submerged in mud, the report added, leaving a total of a quarter buildings damaged in the flood-ravaged city.
A passenger plane from London made an unscheduled landing at Warsaw-Modlin airport in Poland after a bomb threat alert on Tuesday, forcing the airport to close, and another plane from Copenhagen was being checked at Warsaw-Chopin airport.
Air quality deteriorated sharply in parts of northern India and adjoining Pakistan on Tuesday, with the onset of pre-winter smog making Lahore the world's most polluted city and authorities in Delhi imposing curbs to fight the toxic haze over the capital.
Russian forces on Monday bombed a school being used as an aid distribution point in a village in Ukraine's southeastern Zaporizhzhia region, killing 26 people, Ukrainian President Volodymyr Zelenskyy and the country's emergency services said.
Saudi Arabia's Defence Minister Prince Khalid bin Salman has discussed strategic defence cooperation and efforts to de-escalate regional tensions with US Defense Secretary Pete Hegseth in a phone call on Monday.