Expressing concern over health hazards posed by mobile towers, the National Green Tribunal (NGT) has issued notice to the Centre and seven telecom firms on a plea alleging they are being installed in violation of stipulated guidelines.

A bench of the Tribunal comprising acting chairperson Justice A.S. Naidu and expert member P.C. Mishra also restrained the telecom firms from setting up fresh mobile towers in the country without following mandatory provisions of law and obtaining the necessary permission from the competent authority.