A police sergeant was arrested Thursday on suspicion of killing his wife found dead Tuesday in Fukuoka Prefecture.
Mitsuru Nakata, a 38-year-old sergeant with the Fukuoka Prefectural Police, is accused of being involved in the deaths of his family, including 38-year-old wife Yukiko Nakata, son Ryosuke, 9, and daughter Miyu, 6.
Their bodies were found at their home and Nakata denies the allegation.