Victim told police, 'When I looked back, I saw [the suspect] with a knife'
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Read the latest stories on Japan’s criminal underworld
Suspect, who pointed a handgun at arresting officers, said: 'I fired about 30 rounds'
On Tuesday, police raided an office of Teruya-ikka in Naha City in search of evidence in the case
Tokyo police raided an office of a Kodo-kai affiliate in Gifu City on Thursday
Suspect denies the allegations, telling police, 'I didn't say anything that could be construed as a threat'
Suspect told police, 'I was prepared to be arrested'
Suspect shot the victims at close range with police officers present on October 10
Suspects demanded payment of 'protection money,' police said
Kiyoshi Takayama served a 6-year prison term for extortion
Non-prosecution was due to insufficient evidence