According to police, Koji Okata, 71, died due to loss of blood from a stab wound to his chest that damaged his heart.
At 12:30 p.m., a person living in the Tomita area alerted emergency services about a man found collapsed on a road. Emergency personnel arriving at the scene found the Okata lying face-down with blood coming from his head and chest. He was later confirmed dead at a nearby hospital.
Okata lived by himself in a residence near the crime scene. The interior of the home did not show any signs of having been ransacked, police said.
The case is being treated as murder.