Johor Mentri Besar Datuk Dr Sahruddin Jamal said the authorities have narrowed down to 30 chemical factories that may have caused the air pollution in Pasir Gudang.

He added that once the factory of the main polluter have been found, a letter to cease their operations will be issued until we carry out full investigations.

Read more at https://www.thestar.com.my/news/nation/2019/06/24/johor-govt-investigating-30-chemical-factories-in-pasir-gudang/