Section 39(2) in West Bengal Clinical Establishment (Registration, Regulation and Transparency), Rules, 2017
(2)The Supervisory Authority or the Police Officer accompanying him shall immediately before entering the premises in question-(a)audibly announce that he/she is authorized to enter the premises and demand admission to the premises; and(b)notify the person in control of the premises of the purpose of the entry, unless there are reasonable grounds to believe that such announcement or notification might defeat the purpose of the search.
