Police say California boy , 12 , arrested on suspicion of fatally stabbing sister Leila Fowler , 8 . Boy was suspended this year for bringing small pocketknife to school , two sources say . Score: 6
Police say California boy , 12 , arrested on suspicion of fatally stabbing sister Leila Fowler , 8 . Boy was suspended this year for bringing small pocketknife to school , two sources say . Authorities have n't said what kind of knife was used in girl 's death .