http://www.ft.com/cms/s/0/f0e28cf0-f377-11dd-9c4b-0000779fd2ac.html?nclick_check=1

Japanese police on Thursday arrested the 75-year-old head of a bedding company and 21 others suspected of operating an alleged $2.5bn Ponzi scheme that sucked in tens of thousands of people, the country’s largest ever such fraud.

The suspected fraud would rank among the biggest of a growing number of such scams, the largest being the alleged $50bn Ponzi scheme operated by Bernard Madoff in the US.

alleged 申し立てられた，うわさによる

Ponzi　scheme ネズミ講

scam 詐欺