You should consult with your attorney who will them advise and coordinate with law enforcement and the prosecutors office.
Of course, every answer is based on the question asked and requires a more complete context. This answer should not be relied upon to make a legal decision. Seek the advice of an experienced criminal defense attorney before acting. Law Offices of Raymond G. Wigell, Ltd. Defenders of the Constitution since 1975/ Aggressive Creative Defense Strategies/ Website: www.waaltd.com 24/7 --(708) 481-4800.
You should contact law enforcement to report the crime(s). However, keep in mind that the responsiveness of the police agency you contact will in part be determined by the amount of fraud/embezzlement as well as the ability of the police officer taking your report to understand the complexities of the crime(s). Shrinking budgets and staff also affect how your report is responded to, so be prepared for a police agency to tell you "your complaint is a civil one, not criminal." Therefore, if you can afford it, I would contact your business attorney and ask him/her to coordinate with law enforcement and help explain the financial crime(s) that took place. A business attorney will also be able to tell you if you have any civil remedies against the people who defrauded you. Don't call the prosecutor directly - he/she will only instruct you to first report the crime(s) to police. Prosecutors generally only get involved AFTER the police refer the matter to the prosecuting attorney's office for review/filing of charges. Good luck!