JAKARTA: Indonesia's parliament on Tuesday voted to ratify a regional agreement on cross-border haze as fires ripped through forests in west of the country, according to the AFP.
Haze conditions were reported mostly in the south of Peninsular Malaysia, mirroring the situation in Sarawak and Sabah.
Areas like Sri Aman in Sarawak recorded an air quality index (API) of 99 at 8am on Tuesday. According to satellite imagery, the hotspot count was a staggering 673 on Borneo island.
Officials in Singapore and Malaysia have responded furiously to Indonesian forest fires, which have intensified and become more frequent in recent years.
Singapore's air pollution rose to unhealthy levels on Monday as Indonesian authorities failed to control fires in Sumatra island's vast tracts of tropical forest.
Parliament's decision has been passed into law.
The agreement obliges Indonesia to strengthen its policies on forest fires and haze, actively participate in regional decision-making on the issue and dedicate more resources to the problem, regionally and domestically.
Indonesia signed the Asean Agreement on Transboundary Haze Pollution 12 years ago and has been under increasing pressure to ratify the document, beginning deliberations in earnest in January.
"Indonesia has already carried out operations for the prevention, mitigation of forest fires and haze, and recovery activities, at the national level," parliament said in a statement.
"But, to handle cross-border pollution, Indonesia and other Asean nations recognise that prevention and mitigation need to be done together," it said.
While Singapore and Malaysia are smothered in haze from Indonesian forests every year, fires in June last year caused the region's worst pollution crisis in a decade, renewing calls for action in Indonesia.
Authorities have said most of the fires are deliberately lit to clear land for commercial plantations, such as paper and palm oil, and have arrested people caught in the act.