Think about it... he didn't shoot them, he stabbed them so in order to kill them, he was extreemly close and touching them..... as compared to standing back to shoot them... That is really SCAREY to me! He had to have been covered in blood after stabbing 3 people to death and how many times did he have to stab them to kill them?

Yep, treat him as a adult and get him permanently off the streets!