Section 2(1)(cg) in The Kerala Panchayat Buildings Rules, 2011
(cg)'Security Zone' means any area, identified and delineated by the Home Department of the state government as Security Zone from time to time and notified and published in the government gazette by the Local Self Government Department. For the purpose of these rules, any area around compounds or sites which accommodate vital or strategic installations, offices, residences, institutions, landmarks, jail compounds, monuments, ports, shipyards, scientific and advanced research centres and the like, which in the opinion of the government, needs special security and necessitates regulations and/or restrictions for constructions and land developments around, can be delineated as security zone;