According to the U.S.Justice Department report released in 1999 (Eyewitness Evidence: A Guide for Law Enforcement),the same fillers should be used in lineups when a new suspect is shown to the same witness.

Question

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The guide recommends that when a new suspect is shown to the same witness, different fillers (non-suspects) should be used in the lineup to prevent the witness from making relative judgments based on previous lineups, thus ensuring the integrity of the identification process.