I had read that the stun gun proposed as the model used was discounted by the manufacturer as having produced the wounds seen in the photographs. But who knows with all the spin going in so many directions. A cattle prod, or other device, might explain that.
Interesting link:
www.newint.org/issue327/trading.htm
'This is the worst thing - an electric cattle prod. They use this on your body. If they press that button, your whole body will be in shock. If they do it for too long, you lose consciousness but you do not die. If they press this button, you can die. ...