The bankruptcy trustee overseeing the unraveling of Scott Rothstein’s defunct law firm has filed a $5 million lawsuit against a Fort Lauderdale investment brokerage firm that allegedly brought investors into the attorney’s Ponzi scheme.

Trustee Herbert Stettin filed the complaint Friday against R.L. Pearson & Associates, which is run by broker Richard Pearson, claiming the firm improperly benefitted from the Ponzi scheme. The suit claimed Rothstein transferred $5 million to Pearson within a two-year period consisting of either commissions for introducing new investors to Rothstein or purported returns on investments the broker directed to the fraud.