Bismarck police this week destroyed a pipe bomb found near the western town of Hebron.
Morton County Sheriff Dave Shipman says a woman found the device near a pond on Tuesday, and the Bismarck bomb squad determined it was a homemade pipe bomb. The squad destroyed it as a precaution.
Shipman says it appears someone had tried to detonate the bomb before it was found.
Authorities did not immediately have any leads in their investigation.