A quite specific request... I did not come across any MBA mentioning investigations, fraud nor Corporate Goverment (the latter sometimes mentioned as a general asset of the MBA), only MBAs with concentrations in risk management.

If you really insist on that specialization whatever school it is, here a list of what I found:
- Tennessee Tech University: DL MBA with concentration in Risk Management and Insurance
- Concordia University - Wisconsin, DL MBA w concentration Risk Management
Or more exotic:
- Indian Institute of Management Training (IIMT), Pune, DL MBA with concentration in Insurance & Risk Management
- Mirbis - Moscow Business School, DL MBA w concentration in Economic safety and risk management

As for part time MBAs in German speaking Europe, here we go:
- Donau-Universität Krems, Danube Professional MBA Enterprise Risk Management
- WU Executive Academy - Vienna University of Economics and Business Administration, MBA conc in Banking & Insurance (English)

Can you specify in which sector you are working? Maybe a program with a little different orientation can be suitable also.

You are looking for Either a Forensic Accounting Degree, or?.

One of the Programs at Utica College (of Syracuse University, NY)
They have a MS in Economic Crime Management and a MBA which emphasizes Fraud Investigations.

?and you can do these on line.