Alleging a “grave violation” of court orders, city-based environmental NGO Vanashakti has written to the state’s chief secretary and civic officials, raising fresh concerns over a massive debris dumping site along the Mithi river in Aarey Milk Colony.

The NGO said the debris was to be cleared and the land developed into a garden as per court directives. Instead, it alleged, the Brihanmumbai Municipal Corporation (BMC) has failed to comply and has transplanted trees from the Goregaon-Mulund Link Road (GMLR) project onto the plot. Several of these trees, it claimed, have begun to wither.