Teen kills another teen after smoking K2

      Authorities have charged a 19-year-old in a stabbing death at a bonfire in suburban Kansas City.

      Ryan Tyler Cox of Kansas City was charged Thursday with second-degree murder and armed criminal action in the death last Saturday of 19-year-old Chason A. Pennington of Lee's Summit.

      Court records said that Cox told police the stabbing was self-defense and he did not mean to hurt Pennington.

      Witnesses told police that some teens at the campfire were drinking and smoking K2, a synthetic marijuana, before the stabbing.

      The death comes as Missouri legislators are debating a bill banning K2.

      Some experts believe K2 is potentially much more dangerous than pot.

      K2 is a mixture of natural herbs treated with chemicals and sold legally as potpourri in smoke shops and convenience stores.