Firefighters are continuing to tackle forest fires in Indonesia that have led to a thick haze in some cities as well as Singapore and parts of Malaysia.
Hospitals in Dumai and Bengkalis in Indonesia's Riau province have recorded increases in cases of asthma, lung, eye and skin problems, health official Arifin Zainal told Reuters.
Free face masks are being distributed and authorities have advised residents to stay indoors with their windows shut.
More top news
A GoFundMe page was set up by the children's uncle to raise £15,000 for their funerals.
Lindsay Hoyle said his "family will never be the same" after the death of his 28-year-old daughter Natalie.
Police say they have traced four drivers who are thought to have hit the woman, and added that a fifth vehicle may also have been involved.