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The Boston Globe


O’Brien declines to testify as prosecution rests in probation case

Testimony in the Probation Department corruption trial concluded Friday with a retired probation chief tearfully telling jurors about his respect for former commissioner John J. O’Brien, who was once his boss.

Prosecutors threatened William Mattei with perjury charges, after the witness allegedly backtracked from previous testimony that would have reflected negatively on O’Brien.

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