New York state gaming regulators are reviewing a pair of winning bets made by a fraternity brother of Chris Harn and Derrick Davis, the two men under scrutiny in the growing Breeders' Cup Pick Six investigation, according to sources familiar with the probe.

Glen DaSilva, 29, who, according to records, lived at the Drexel University Tau Kappa Epsilon fraternity house in Philadelphia at the same time as Harn, made the winning bets prior to the Oct. 26 Breeders' Cup, a source said.

Calls last night to Stacy Clifford, spokeswoman for the New York State Racing and Wagering Board, which is leading the investigation, were not returned.

Attempts to reach DaSilva, who has not been charged, were unsuccessful.

Harn, a senior software engineer, was fired last week by Autotote, the company responsible for processing wagers for the Breeders' Cup. Harn was dismissed for allegedly "manipulating" a Pick Six wager made by Davis so that it would include the winning horses in each of the first four races.

The winning bet, which requires bettors to pick the winning horses in six consecutive races, would pay $3 million. Payment is being withheld pending the investigation.

Neither Davis nor Harn has been charged in the case.