A major cleaning up at a duck and goose farm beside Sungai Pajam in Negeri Sembilan is believed to be the source of the odour pollution in Sungai Semenyih and Sungai Langat.

Selangor State Environment, Green Technology, Science, Technology and Innovation and Consumer Affairs Committee chairperson Hee Loy Sian (photo, above) said this followed pollution detected from organic substances such animal carcass and not from petroleum.