The Environment Ministry on Friday issued a show cause notice to the controversial Adarsh Housing Society in Mumbai for 'blatant' violation of green norms, asking why the 31-storey building should not be demolished.

The ministry sought a written reply within two weeks and gave one more week to the society to meet the ministry officials, Environment Minister Jairam Ramesh said. "The Environment Ministry has today issued a show cause notice to the Adarsh Cooperative Housing Society in Mumbai for the blatant violation of the Coastal Zone Regulation (CRZ)," he told reporters here.