The 2005 Malaysian haze was an air pollution crisis caused primarily by fires in neighbouring Indonesia. In August 2005, haze spread across Malaysia from forest fires on the Indonesian island of Sumatra, leading to air quality reaching hazardous levels in certain states and the capital city, Kuala Lumpur. The Malaysian government declared states of emergency in affected regions, closed schools and held crisis talks with Indonesian officials. Farmers regularly burn scrub and forest to clear land during the dry season for agricultural purposes. The 2005 haze was at the time the worst to hit Malaysia since 1997.