When I was the age of those arrested after this horrible incident we also carried knives, but they were penknives and sheath/bowie knives. No way would we use them to stab someone. They were used for stripping bark off branches to make 'dens', carve names in trees, knife throwing practice at trees etc. Those arrested face a life of trouble if found guilty. The girl's family and the families of those arrested will now sadly be in a very bad place!