Bismarck Police say a 26-year-old Bismarck women was treated for a heroin overdose on Sunday night around 10 p.m.
Bismarck Police say the heroin could be laced with Fentanyl.
A person called dispatch saying that a female had overdosed and had abnormal breathing.
When officers arrived, they found the women lying in the hallway of an apartment building.
Metro Ambulance arrived on scene and administered Narcan and she became conscious.
Bismarck Police found a baggy that they sent to the state crime lab to be tested.