Regardless, the AP reports that the Chechens tossed a grenade, but apparently the only person hurt was one of the other Chechens, and a doctor in the audience is treating him.
Hey, doc, what's up with that?
I doubt he has a choice. "Any doctors step forward or we shoot someone".
Yes, this does have an 'in like a lion, out like a lamb' nuance, doesn't it? (knock on wood)