The Karnataka State Pollution Control Board (KSPCB) on Tuesday submitted in the High Court of Karnataka that all stone crushing units had been closed on June 30, 2012, following a Supreme Court order.

During the hearing of a petition by Vasanth Devadiga and others, challenging the permission for stone crushing units near residential zones, the KSPCB authorities including chairman A S Sadashivaiah, who were present in the court, said none of the leases had been renewed.