Gerald Riley testified Wednesday that Mann was his family physician and that they became friends over a shared interest in guns. He says he bought several guns from Mann and that they once shot machine guns into the lake behind Mann's Pope County home.
Mann is on trial for the February 2009 bombing that injured Dr. Trent Pierce, the Arkansas State Medical Board chairman.
Riley says Mann told him several times that he wanted to kill members of the medical board, but he never singled anyone out. Prosecutors claim Mann planned the bombing as revenge as the board began investigating whether to revoke his medical license.
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