The Thumb Narcotics Unit is a multijurisdictional task force comprised of eleven participating agencies. The area of responsibility covered by TNU includes the counties of Huron, Lapeer, Sanilac, and Tuscola. TNU is staffed from agencies throughout the coverage area. The combined population of responsibility is approximately 204,000 people.

To report drug or criminal activity to Thumb Narcotics Unit, call 1-877-868-8477 (1-877-TNU-TIPS).

TNU Contact number: 989-673-8600