Is a police informant entitled to privilege if the informant is a suspect or a suspect?

Obviously, the police have to take their informants as they find them. Excluding from the scope of the privilege those informants who are placed in a position to provide information to the police because the informant is a suspect or is in custody places an unwarranted limit on the informer system "which has been of great help to and regarded as a necessity for law enforcement and which has existed from the very beginning of police work." (People v. Pacheco (1972) 27 Cal.App.3d 70, 81, 103 Cal.Rptr. 583.)