10th Cir. Crim. Pattern Jury Instr. 1.14

[as appropriate] Accomplice

An accomplice is someone who joined with another person in

committing a crime, voluntarily and with common intent. The

testimony of an accomplice may be received in evidence and

considered by you, even though it is not supported by other

evidence. You may decide how much weight it should have.

You are to keep in mind, however, that accomplice testimony

should be received with caution and considered with great care.

You should not convict a defendant based on the unsupported

testimony of an alleged accomplice, unless you believe the

unsupported testimony beyond a reasonable doubt.

Informant

An informant is someone who provides evidence against

someone else for a personal reason or advantage. The testimony of

an informant alone, if believed by the jury, may be of sufficient

weight to sustain a verdict of guilt, even though not corroborated

or supported by other evidence. You must examine and weigh an

informant’s testimony with greater care than the testimony of an

ordinary witness. You must determine whether the informant’s

testimony has been affected by selfinterest, by an agreement he

has with the government, by his own interest in the outcome of the

case, or by prejudice against the defendant.

You should not convict a defendant based on the unsupported

testimony of an informant unless you believe the unsupported

testimony beyond a reasonable doubt.

Immunity

A person may testify under a grant of immunity (an

agreement with the government). His testimony alone, if believed

by the jury, may be of sufficient weight to sustain a verdict of guilt

even though it is not corroborated or supported by other evidence.

You should consider testimony given under a grant of i mmunity

with greater care and caution than the testimony of an ordinary

witness. You should consider whether testimony under a grant of

immunity has been affected by the witness’s own interest, the

government’s agreement, the witness’s interest in the outcome of

the case, or by prejudice against the defendant.

PATTERN CRIMINAL JURY INSTRUCTIONS

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On the other hand, you should also consider that an

immunized witness can be prosecuted for perjury for making a

false statement. After considering these things, you may give

testimony given under a grant of immunity such weight as you feel

it deserves.

You should not convict a defendant based on the unsupported

testimony of an immunized witness unless you believe the

unsupported testimony beyond a reasonable doubt.