Police revealed to the media Tuesday further details of the double-murder that took place in a home in the town of Kanie, Aichi Prefecture, on Saturday.
An autopsy on Monday revealed that Kihoko Yamada, 57, found dead under a blanket in a closet on Sunday, died of head injuries caused by repeated blows with a blunt instrument, believed to be a spanner found near the bathroom sink on the first floor. The autopsy report said she was not stabbed as originally suspected, that the injuries on her back were inflicted by the blunt instrument, and that there were marks on her neck indicating she had been strangled as well.
Her second son, Masaki, 26, was found dead in a bedroom on Saturday, stabbed in the back and neck, after police visited the home following a call from a colleague concerned that Masaki had not turned up for work.
Police said his brother, Isao, also 26, was attacked in the entrance of their home when he came home early Saturday morning after drinking in Nagoya City. He was stabbed in the neck from behind and was tied up with an electrical appliance cord, but survived.
Police announced that the cat the family kept was also killed in the incident, and are investigating if the family was involved in some kind of dispute.
Meanwhile, Isao told police that the assailant demanded money from him, and that his intonation in Japanese was strange, leading police to suspect that the crime may have been committed by a foreigner. Isao said he saw the assailant’s face briefly, but that he lost consciousness shortly after, and could not recall details about his face or clothing. Police said that the family’s bankbooks and wallets were not stolen from the home.
Isao’s house keys were found on the property outside, and police believe that the assailant threw them there after locking the front door of the home.
Police said a knife, believed to have been used in the stabbing of Masaki and Isao, was found in the bathroom sink, with the water still running. The spanner was also found nearby, and appeared to have been washed and wiped dry.© News reports