Staff to be on the lookout for forged prescriptions or purchases of large amounts of medication
TokyoReporter
Disruption affected an estimated 2,150 passengers
Perpetrator had placard with the handwritten message, 'Japan has been almost taken over'
Ring lured men to a Shibuya Ward bar and extorted them
Intruders entered by bypassing the automatic lock
Tatsuo Ozawa is the newly anointed chairman of the Tosei-kai
Perpetrator said, 'I scattered liquid and set it on fire'
Suspect said, 'I have no excuses'
Suspect said, 'I didn't intentionally use violence'
Police are investigating the exact cause of Friday's brawl