Indonesia fires and haze cause more than 5,200 deaths, study finds Prolonged exposure to toxic smoke from raging forest and peat fires was responsible for at least 5,200 deaths in Indonesia in August and September, with people living in Borneo and Sumatra suffering the most, according to a study released Thursday.

Indonesia fires and haze cause more than 5,200 deaths, study finds Prolonged exposure to toxic smoke from raging forest and peat fires was responsible for at least 5,200 deaths in Indonesia in August and September, with people living in Borneo and Sumatra suffering the most, according to a study released Thursday.