Corporate, mortgage and securities investigations by the FBI rose last year, while the number of health care fraud cases remained flat, according to a just-released financial crimes report.

 
The FBI reported it had 529 corporate fraud investigations, nearly double the number five years earlier. The number of mortgage fraud investigations pending nearly tripled, up from 436 in FY2003 to 1,204 in 2007. The bureau also reported 321 mortgage fraud indictments and 839 health care fraud indictments in fiscal year 2007.