UN Secretary-General Ban Ki-moon has visited Haiti to see the devastation left by Hurricane Matthew.

Storm victims continue to express frustration at delays in aid more than a week-and-a-half since the category 4 storm hit. Ban's helicopter travelled to the storm-damaged southern city of Les Cayes.

He visited victims at a school and promised to help them, while urging them to "stay strong". Media reports put the death toll at more than 1,000. Around 175,000 people were made homeless.