two Police officers connected with the detection and seizure of the contraband, who were examined as PWs 1 and 2. PW 1, Asst. S.I. Of Police, who detected the crime and seized the contraband, had no authority to do so, is the attack raised by the learned counsel for the accused, relying on the notification of SRO No. 321/1996 and also the decision rendered by this Court in Sabu v. State of Kerala, 2007 (3) KHC 753: 2007 (4) KLT 169. If it was a case of accidental detection without prior information, then it could be stated that any police officer was expected to prevent the commission of any offence and taking the offender into custody. But this was a case, even according to the prosecution, PW 1, the Asst. S.I. of Police received prior information of sale of illicit arrack in the residential building of the accused. He proceeded to that spot, pursuant to that information indicated that he went there to have a raid of the building, and, search the place. When a raid over the residential building for detection of Abkari offence is involved, necessarily and inevitably the mandate covered by S.31 of the Act applies with full force. There is nothing in evidence to show that PW1 complied with the formalities for conducting search over the residential