Indonesia on Tuesday released waterbombs to put out forest fires in Riauprovince, in a bid to fight the haze that has caused one of Southeast Asia's worst air pollution crises.<br/> <br />Firefighters were also on site in Bengkalis, one of the areas in the province with the highest number of fires.<br/> <br />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.<br/> <br />Authorities said they started cloud-seeding operations last week and it induced a 20-minute rain shower in the capital of Pekanbaru on Tuesday afternoon, the first rainfall in a month.
