Hazardous materials have been found in soil and water samples taken from several sites previously identified by environmental NGO Greenpeace Malaysia as part of its investigation into imported plastic wastes.

The investigation which involves Greenpeace researchers from Germany and its representative in Malaysia was carried out at three plastic waste dump sites in Selangor - Pulau Indah and Kapar in Klang, Sungai Cheeding in Kuala Langat - and at an unregulated site in Kedah along the Sungai Muda riverbank.