A 74-year-old woman and her 50-year-old eldest daughter were murdered at a house in Ibara City, Okayama Prefecture on the 26th. was found dead in Oita Prefecture.
Police believe that he committed suicide based on the situation at the scene, and are investigating his involvement in the incident in detail.
On the 26th, a 74-year-old woman living in the house and her 50-year-old eldest daughter living together were found beaten to death at a house in Nishiebara, Ibara City. A 25-year-old grandson, the son of the woman's eldest son, who lives in a house, was suspected of being involved in the incident, and was investigating his whereabouts.
After that, it was known that the grandson was supposed to have gone to Fukuyama City, Hiroshima Prefecture by car and boarded a Shinkansen heading for Kyushu from Fukuyama Station, but on the 26th, he was found dead in a river in Oita Prefecture. On the 28th, it was confirmed that he was his grandson.
Police believe he committed suicide by jumping off a bridge.
Blood-stained clothes were found in the house where the grandson lived, and the police are investigating the grandson's involvement in the incident.