Overview
- Officers responded around 6:40 a.m. on November 4 to a multi-unit residence in Matsubara 1-chome, Setagaya Ward.
- The infant was discovered on a bathtub lid with multiple abdominal cutting wounds and was confirmed dead at the scene.
- A kitchen knife was found near the bathroom and is viewed by police as the likely weapon.
- The woman who phoned 110 identified herself as the mother and said she had killed the baby, according to police.
- Authorities say the household includes the mother, her husband, and the infant, though only the mother and child were present when police arrived, and the investigation remains ongoing without an announced arrest.