The FBI investigated Joe Montana as part of a sting operation that snared Leland Lee and Chinatown tong leader Raymond "Shrimp Boy" Chow.

Montana has dabbled in development deals since retiring from football after the 1994 season, was contacted by an undercover FBI operative about an unspecified business proposition during the Yee-Chow investigation, according to one source familiar with the case.

"Nobody has said he did anything wrong," said the source, who requested anonymity because of the sensitivity of the case.