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PHILADELPHIA (CBS) — Former death row inmate Mumia Abu-Jamal is due in court Monday morning. He’s asking a judge to set aside previous convictions so he can go through the appeals process again.

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Abu-Jamal is serving a life sentence for the 1981 murder of Philadelphia police officer Daniel Faulkner.

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In October, a judge postponed a decision on another appeal attempt by Abu-Jamal.

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His lawyers say Abu-Jamal’s rights were violated during appeals, citing the bias of then-state Supreme Court Justice Ron Castille, who previously served as Philadelphia’s district attorney.

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