Japanese police on Wednesday launched special teams to reinforce their fight against tokuryū ad hoc crime groups made up of anonymous members.

The National Police Agency (NPA) and Tokyo's Metropolitan Police Department (MPD) took the action with no sign of decline seen for crimes by tokuryū groups, whose members are connected through social media for illegal activities such as fraud and robbery.

The new teams will gather and analyze information across organizational boundaries to spot core tokuryū members and concentrate their investigative power on arresting and eradicating such groups.