Overview
- Police in Tochigi arrested four 16-year-old high school boys on suspicion of robbery and murder after a Thursday home invasion in the town of Kaminokawa.
- An autopsy found 69-year-old Hideko Tomiyama died of hemorrhagic shock after more than 20 stab and slash wounds.
- Her sons, described as in their 30s and 40s, suffered head injuries during the attack and remain in hospital.
- Officers detained the first suspect near the house shortly after the assault and later sent him to prosecutors.
- Police seized a white luxury foreign sedan believed to be the getaway car and are examining whether the teens drove it to the home.