She left her accommodation with her passport, wallet and mobile telephone
TokyoReporter
Suspect met the girl on social media, police said
Suspect said, 'I don't want to say anything'
Case is being treated as robbery
Suspect said he 'strangled her with both hands for more than five minutes and broke her neck'
Suspect was in possession of four knives, police said
One suspect said, 'I have no recollection of this'
Police are searching for a duo on a motorcycle
Police said, 'We have taken strict disciplinary action against this outrageous act'
Suspect said, 'I exploded with anger'