NASHVILLE --- The Tennessee Department of Safety and Homeland Security announced Tuesday that the Tennessee Highway Patrol investigated zero alcohol-related fatal accidents in the 16 counties chosen for “No Refusal” DUI enforcement efforts over the Labor Day holiday period. Additionally, just one DUI suspect detained by the THP refused to take a blood alcohol level test in these enforcement counties and one search warrant was obtained for a blood sample under the new “No Refusal” law. The enforcement effort was coordinated by the Tennessee Highway Patrol, along with the Governor’s Highway Safety Office (GHSO), local district attorneys, and various local and state law enforcement agencies.