An investigation found that he Chad Isaak had covered his cell window with cardboard and a CO failed to follow proper procedures in conducting required checks
Worn by an inmate in contact with their body and hidden under their clothing, a stun device can be activated remotely by a trained transport officer to quickly stop an escape or violence
Chad Isaak, 48, was serving life sentences for killing four people at a North Dakota business in what authorities say was one of the state's most gruesome crimes