05/28/2009 05:12 am ET | Updated May 25, 2011

AIG Criminal Probe: Feds Investigate Three Former Execs

(CBS) A $5 million Connecticut mansion. A $4 million London townhouse. A $7 million English estate. The houses are owned by three men CBS News has learned are now the subjects of a Justice Department criminal investigation into how AIG crumbled.

Sources say investigators are digging into whether Joseph Cassano, the former head of London-based AIG Financial Products, and two of his top deputies - Andrew Forster, an executive vice president, and Thomas Athan, a managing director - committed securities fraud and other federal crimes, reports CBS News chief investigative correspondent Armen Keteyian.

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