Suspect started tosatsu photography about 5 years ago
TokyoReporter
Deliveryman alerted police after seeing him suspiciously fleeing from a residence in Yokohama City
Suspect denied the allegations, telling police, 'I shot YouTube videos'
Last October, a male customer, also Vietnamese, died from poisoning after taking stimulant drugs and Ecstasy
Road bike was found near the body, police said
Man is believed to have been dead for several days before the discovery
Woman told police, 'I don't know my name or address'
One suspect told the manager of the parlor, 'If you don't pay, I'm not sure what will happen'
Security camera footage showed the suspect following the victim from a nearby railway station before the incident
Tokyo Metropolitan Government said, 'It is truly regrettable that a staff member was arrested'