The guy they were fighting with apparently had knives.....and later on when I finally got everyone to leave the guys house another fight broke out on the lawn and I assume that was when the stabbing took place....I was headed back inside to help clean up. But there was more yelling and stuff outside so I went to break up that fight. I told the fools to go home...but didnt seem to understand that. After another scuffle the cops showed up...and that was that.