Section 389(a) in Police Regulations, Bengal , 1943
(a)When in the course of an investigation or at any other time, a police officer requires information from the officer-in-charge of any other police-station regarding an absconder or any other matter connected with the criminal administration of his jurisdiction except in enquiries regarding the movements of bad characters, he shall address an enquiry slip to him in B.P. Form No. 76 or No. 77. Form No. 76 shall be used in addressing officers within and outside the province and Form No. 77 for enquiries from the Calcutta Police.
