Police are now seeking a motive for the crime
Group said, 'We will continue to strive to strengthen awareness and guidance on infection prevention'
Reo Obika went missing on June 20
Victim is in serious condition, police said
Suspect said, 'I had murderous intent'
Body of Junko Sasaoka, 56, was found lying face-up in a grove of trees on July 23
Suspect said, ‘She was my type’
Body of is that of 56-year-old Junko Sasaoka
Suspect told police that he strangled his father with an electrical cord
Case is being treated as the result of foul play or an accident