A 12-YEAR-OLD BOY CHARGED WITH STABBING HIS LITTLE SISTER TO DEATH PLEAD NOT GUILTY IN CENTRAL CALIFORNIA JUVENILE COURT WEDNESDAY. THE BOY ACCUSED OF KILLING 8-YEAR-OLD LEILA FOWLER WHILE THE TWOS PARENTS WERE AWAY AT A LITTLE LEAGUE GAME ENTERED HIS PLEA IN CALVERAS COUNTY. HE HAS BEEN CHARGED WITH SECOND-DEGREE MURDER WITH A SPECIAL ALLEGATION FOR USE OF A DANGEROUS WEAPON. THE BOY IS DUE BACK IN COURT JULY 31st TO SET A TRIAL DATE.