LandmarkSupreme Court of IndiaMukesh Singh v. State (Narcotic Branch of Delhi): informant and investigator can be the sameOn 31 August 2020, a five-judge Constitution Bench held that the informant and the investigating officer being the same person does not, by itself, vitiate an NDPS trial, overruling Mohan Lal v State of Punjab.Valkya Editorial·10 Jul 2026·6 min