Two months earlier, Ayaka Yamashita, 10, was bludgeoned to death in the same neighbourhood, apparently with a steel pipe. Less than an hour later, a nine-year-old girl was stabbed and nearly bled to death.
Hase's severed head was discovered with his eyes gouged out and his mouth split from ear to ear. The suspect told police he targeted the mentally retarded boy because the victim was weaker. AP - Tokyo