Suspects posed as police officers over the telephone
TokyoReporter
Incidents took place just months after the pair was released from prison
Suspect said, 'I will remain silent'
Tokyo Fire Department said, 'We take this matter very seriously'
Kinya Honma said, 'I wanted money, so I did it'
Police confirmed no shots were fired
Police tracked down the pair by analyzing security camera footage
Kentaro Group operated like a highly structured criminal enterprise, boasting at least 200 members
Police now investigating whether the suspect can be held criminally liable
Japan's underworld will go to great lengths to conceal their deadly arsenals