A car drives past fire from burning trees planted for palm oil, during haze at Bangko Pusako district in Rokan Hilir, on Indonesia's Riau province, June 24, 2013. REUTERS/Beawiharta
SINGAPORE/JAKARTA (Reuters) - Air quality in Singapore improved significantly to "moderate" pollution levels on Saturday, as Indonesian planes waterbombed raging forest fires and investigators scrambled to determine the cause of one of Southeast Asia's worst air pollution crises.
Indonesia's environment minister said eight domestic firms were suspected of being responsible for the blazes on Sumatra island that blanketed neighbouring Singapore in record levels of hazardous smog. Parent companies of the Indonesian firms included Malaysia-listed Sime Darby, the government said.
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