The biggest bank in the United States has been roped into a lawsuit over a customer’s alleged crypto “Ponzi scheme,” as the Department of Justice recently described it, with one of the operation’s victims arguing that JPMorgan Chase should have detected and stopped the misconduct.

The suit, filed this week in a federal court in San Francisco, alleges JPMorgan Chase knowingly permitted one of its customers, Goliath Ventures, to carry out a massive, $328 million fraud that involved a fake crypto liquidity pool scheme and lavish misappropriations of customer funds.

Last month, the operator of the alleged scheme, a Florida man named Christopher Alexander Delgado, was arrested by federal law enforcement on wire fraud and…