Police have called the owner of a machinery factory premises to assist in the investigation into the diesel odour pollution incident at the Sungai Semenyih Water Treatment Plant (WTP) in Jenderam Hilir in Dengkil, Sepang, yesterday.

Sepang deputy police chief Supt Md Noor Aehwan Mohammad said investigation papers were opened after receiving a report from an Air Selangor Sdn Bhd employee at 8.58am on the incident of foul odour at Sungai Semenyih WTP water intake point in Jenderam Hilir...