Kaufman County, Texas (CNN) -- David Crone and his wife were friends with their next-door neighbors, Mike and Cynthia McLelland. They enjoyed life in their quiet, idyllic neighborhood east of Dallas. Tuesday, crime scene tape separating their homes showed that not all was well and peaceful. Deputies and other investigators continued their search for evidence at the home of Mike McLelland, district attorney for Kaufman County. The prosecutor and his wife were were killed there over the weekend. Friends discovered their bodies Saturday, nearly two months to the day after someone killed McLelland's chief felony prosecutor, Mark Hasse, in a daytime shooting outside the county courthouse January 31.
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NEW: Neighbors says he did not hear gunshots
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A gang expert doubts it was a white supremacist group, but a former member says it might be
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A county official says he's confident the district attorney's killer will be caught
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Mike McLelland was the second Kaufman County prosecutor slain in two months
As state and federal investigators flood this north @placeholder county searching for clues in the killing of two prosecutors in two months, the 100,000 people who live here can do little but nervously watch and hope.