Then why duct tape over the mouth and nose?
You don't cover up an accident with duct tape around the head/mouth/nose. I can understand hiding the remains in a plastic bag, maybe, but duct taping? What would have been the point?
Disclaimer - this is one piece of evidence I latched on to. I didn't watch the entire proceeding, nor am I familiar with all the other evidence or facts as presented to the jury. So, I may be speaking out of ignorance, and if I am, please correct me.
It is possible (I didnt follow the case and dont know if this was used as a reason or not) that someone dies in another person’s custody, and that person decides to stage a fake murder to draw attention away from yourself.
If someone has suffocated, the other person could use duct tape and move the body to make it look like a suffocation murder done by someone else.