Kaufman County Sheriff David Byrnes, center, walks away after a news conference in Kaufman, Texas, on Sunday March 31, 2013. On Saturday, Kaufman County District Attorney Mike McLelland and his wife, Cynthia, were killed in their home. (AP Photo/Mike Fuentes)

Photo by: Mike Fuentes

Kaufman County Sheriff David Byrnes, center, walks away after a news conference in Kaufman, Texas, on Sunday March 31, 2013. On Saturday, Kaufman County District Attorney Mike McLelland and his wife, Cynthia, were killed in their home. (AP Photo/Mike Fuentes)