Tom Hanks was among the alleged victims of a Southern California insurance broker accused of overcharging clients hundreds of thousands of dollars for insurance premiums.
Jerry B. Goldman, who was arrested at his Thousand Oaks home, remained in jail on Wednesday, a US attorney's spokesman, Thom Mrozek, said.
A federal grand jury in Los Angeles indicted him on October 30 for fraud.
It is alleged that between 1998 and last year, Goldman overcharged Hanks, the musician Andy Summers and two other victims by more than $US800,000 on insurance policies.
He sent the insurance companies the premiums and kept the overcharged amount, prosecutors claim.
It is alleged that when clients asked him for copies of their insurance policies, Goldman sent them altered copies that didn't disclose the true premium "in order to lull his clients into a false sense of security" and keep them from suing him or seeking criminal prosecution.
Details have not been released but the indictment says the term "insurance policies" in the document refers to coverage for everything from cars, property and fine art to flood, fire, earthquakes, worker's compensation and "personal employment practices liability".
Hanks and Summers were identified in the indictment as T.H. and A.S, but prosecutors confirmed their identities.
The other alleged victims were identified only as M.W.H. and S.R.