GAINESVILLE - Testimony began Tuesday in Hall County Superior Court in the murder trial of 45-year-old Mark Shackelford of Flowery Branch. <br>
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Shackelford is charged with killing his brother, Mike Shackelford, who was also 45 at the time of his death in April of last year. <br>
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The defense says Mark Shackelford attacked his older brother because his sibling had attacked him first. <br>
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Witnesses Tuesday included the men's mother and other family members.
