James, do you have a link to this story? I have seen the same pics in training and was under the impression this happened in a prison. In prison we don't have the luxury of bringing guns to knife fights.

For what its worth, the wounds appear (at least to me) to be made with an improvised/homemade blade since they are all slashes and no stab wounds. Attacks with weapons like this are fairly common in prisons.
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"If there must be trouble, let it be in my day, that my child may have peace."
Thomas Paine