The former head of a Tokyo and Las Vegas investment firm was sentenced Thursday to 50 years in prison for bilking thousands of Japanese victims in what prosecutors called a $1.5 billion international Ponzi scheme that ranks among the largest-ever fraud cases in the U.S.
The high-stakes gambler responsible for the deadliest mass shooting in modern U.S. history sought notoriety in the attack but left his specific motive a mystery, the FBI said Tuesday as it concluded the investigation of the 2017 massacre that killed 58 country music fans.