Police found 2 knives at the scene
Posts published by “Roland Shichijo”
Ex-Tokyo Gov. told weekly tabloid that Chinese operatives were to make it 'look like a traffic accident'
Man felt pain in his back when he stepped onto platform but continued to his office
Victim was unable to get up in time, police say
Yasumasa Shibuya possibly strangled victim in his car
No handrails despite previous incidents
Woman died due to hemorrhagic shock
Third man signaled for help by burning grass after swimming ashore
Suspect claimed to be interviewing victim as part of 'training'
Prior to incident, student said he was 'worried about repeating a year'