Ahead of Ganesh fest, cops warn music system owners [http://cmsenvis.cmsindia.org/resources/newspaper/details.asp?id=92048]Nagpur: The city police have issued notices to owners of DJ system and Ganesh mandals warning them against playing loud music, particularly on the roads, blocking carriageways.Besides, the shops selling noisy crackers will also face action if they are found violating the norms, as per the Environment (Protection) Act, 1986, and Noise Pollution (regulation and control) Rules, 2000.