Body of is that of 56-year-old Junko Sasaoka
TokyoReporter
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
Suspect allegedly slashed the throat of the victim on July 23
Suspect said, 'I had the air conditioning on'
Suspect told police that he regularly did what is known as nampa --- meaning to pick up girls
Girl suffered unspecified injuries that will require one week to heal, police said
Suspect allegedly stole 21 pairs of the victim's underwear
Prior to the incident, the girl exited a shopping mall by bicycle
Over a 30-minute period, the woman attempted to fend off the suspect and screamed for help