Suspect spotted on security camera footage entering vehicle
TokyoReporter
Second would-be victim alerted police after sensing person on phone did not sound like her grandson
Company said, 'The specific method and motives are, at this point, unknown'
More than 150 exhibitors from over 40 countries are expected to congregate at Hikarie Hall
Suspects also face drug charges
Masahiro Aoki strangled Kana Iwase, 17, to death in his residence in Edogawa Ward in 2015
Suspect pulled a knife on an employee and demanded money in broken English
Man found hanged from door, woman collapsed on bed
Suspect said, 'I learned by watching others'
Incidents took place 15 minutes apart