(Jefferson County) The Bureau of Alcohol, Tobacco, Firearms and Explosives is offering a $10,000 reward for information leading to the apprehension and conviction of a Jefferson County homicide suspect. Kevin Anderson of Fort Atkinson is wanted in connection with the killing of his biological sister, 57-year-old Nedra Lemke, and her husband, 59-year-old James Lemke. The 62-year-old is also alleged to have shot at a Jefferson County sheriff’s deputy and for setting fire to his deceased parent’s Sumner house on June 16th. Investigators have been unable to locate Anderson since the incident. The U.S. Marshals are also working closely with case investigators to help apprehend Anderson. Anyone with information on his whereabouts is asked to contact the Jefferson County Sheriff’s Office at 920-674-7311. Authorities say information can be submitted anonymously, but if a reward is sought, be sure to include contract information.