A man who received the death penalty for murdering a Kirkwood, Mo., police officer asked the Missouri Supreme Court today to give him a new trial.

Kevin Johnson, now 23, was convicted of first-degree murder in November 2007 for the July 2005 shooting of Kirkwood police Sgt. William McEntee, 43.

Johnson's attorney, Deborah Wafer, argued that one of the jurors knew Det. Don Scognamiglio, who testified at the trial.

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