Flooding in southern Thailand has left at least nine dead and affected over half a million households. Residents continue to evacuate as floodwaters persist for a fourth day. Authorities warned that more heavy rain is expected.

At least 13 people died and tens of thousands evacuated in one of the worst floods in decades to batter southern Thailand and northern Malaysia.

Malaysia and Thailand are facing a second wave of heavy rain and potential flooding this week, authorities said on Monday, even as some displaced residents were able to return home and the worst floods in decades began receding in some areas.