The menteri besar says stern action is needed because farmers are ignoring an order to stop the activity.
Universiti Malaya senior lecturer Helena Varkkey says the focus should be to seek solutions rather than point fingers.
Twenty-nine areas also record 'unhealthy' API readings.
The air pollution index in Palangka Raya hit 500.
Schools in Melaka to be closed if pollution level rises above 200, those in Pontian, Muar and Tangkak to remain closed until level drops.
A proposal by 15 concerned Malaysian citizens to put Indonesia under a legally-binding obligation to solve haze problem.
PM says he has not written complaint letter to Indonesian President Joko Widodo yet.
Deputy environment minister Isnaraissah Munirah Majilis says a similiar exercise carried out in Sarawak last Thursday has improved air quality.
He tweets that horseback riding is a kind of therapy for him.
Health ministry is monitoring diseases such as asthma, eye and respiratory infections which can result from exposure to the haze.
Light and refreshing, this salad is sweet from the watermelon, sour from the strawberries and briny from the feta cheese.
With the air quality going from bad to worse these past few weeks, stave away sickness by keeping your body strong.
Thousands of personnel and water-bombing helicopters are only keeping the flames at bay.
A total of 40,000 children to stay away from school, after a day of 'very unhealthy' air quality.
Notices issued to stop all open burning activities, and National Haze Action Plan put into action.
Many Singaporeans chose to stay indoors on Saturday as a grey haze shrouded the city.
Indonesia has full power to enforce their law on their land, says the environment minister.
He says Malaysian companies operating in Indonesia will not want to harm their brand and values by conducting open burning in Indonesia.
It also says its operations are governed by a Zero Burning policy which has been recognised by the UN.
The home minister says he has instructed the IGP to take immediate action against those who bring up race and religious issues.
Primary Industries Minister Teresa Kok defends the four companies, saying they were among the 'most respected oil palm cultivators'.
Environmentalists say Bursa Malaysia and the Indonesian government must take stern action after Jakarta names four major plantation groups over fires.
The Klang Valley is the worst hit, with 'very unhealthy' air quality at Johan Setia in Klang, Selangor.
Johan Setia in Klang, Selangor remains the only area with a very unhealthy API of 209.