Existing law prohibits a jury or judge from convicting a defendant, finding a special circumstance true, or using a fact in aggravation based on the uncorroborated testimony of an in-custody informant. Existing law defines “in-custody informant” for these purposes as a person, other than a codefendant, percipient witness, accomplice, or coconspirator, whose testimony is based on statements allegedly made by the defendant while both the defendant and the informant were held within a city or county jail, state penal institution, or correctional institution.

Existing law provides that, except as otherwise provided by statute, all relevant evidence is admissible. The California Constitution provides for the Right to Truth-In-Evidence, which requires a ²/₃ vote of the Legislature to exclude any relevant evidence from any criminal proceeding, as specified.

This bill would instead make testimony by, or information obtained by, an in-custody informant, as defined, regarding statements made by the defendant while the defendant was in custody, inadmissible, as specified. The bill would provide an exemption for such testimony relating to a crime or incident occurring within a correctional facility and testimony obtained pursuant to a law enforcement operation, as described, that meets specified criteria.