LAWRENCE, Mass. (MyFoxBoston.com) – Jury selection begins Monday in the murder trial of Rafael Martinez, who is charged with killing Timothy Walker during the summer of 2010 in Lawrence.Prosecutors say Martinez shot the 20-year-old Walker in the head with a shotgun as he sat with friends on his grandmother's front porch in Lawrence. He was taken to a Boston hospital where he died the next day.Authorities got a break when they released surveillance video of the shooting. Police allege Martinez told a friend it was him in the video.Prosecutors told FOX 25's Bob Ward that his story on Walker's murder, as well as the video, led directly to the arrest of Martinez.
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