Matter emerged after a female staff member found the camera on December 12
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News from Chiba
One suspect reportedly threatened, ‘We’ll kill you’
Perpetrator fled the scene by car, police said
Suspect told police that he did 'not intend to kill'
Victim had been slashed in the neck, police said
Police arrested the suspect after an examination of security camera footage
Suspect is a professor in the Department of Applied Physics and Physico-Informatics
Victim suffered a broken nose, police said
Victim went missing in July, police said
Suspect told police, 'I have no memory of the matter'