Keith Srakocic/Associated Press

Former NBA agent Andy Miller and his former associate, Christian Dawkins, are reportedly at the center of the FBI's investigation into bribery and corruption in college basketball.

Sources close to the investigation told Yahoo Sports' Pat Forde and Pete Thamel that financial records and spreadsheets detailing who got paid and how much they were paid, as well as wiretaps, have given investigators a "surprising level of specificity" into Miller's business dealings as part of the FBI probe. 

The report also noted, per the sources, wiretap conversations involving Dawkins "illuminate the blatant nature of deal-making to land top talent well before the players turn professional."

In September, federal prosecutors in New York announced charges of fraud and corruption against 10 people as part of a three-year investigation by the FBI relating to coaches receiving financial payments for directing NBA prospects to specific agents, apparel companies and financial advisers.

Miller's agency, ASM Sports, is estimated to have been paying out "more than three times as many prospects, and families of prospects, as clients they signed," per Forde and Thamel.

Forde and Thamel reported in November that Miller's office was raided by authorities in September as part of the probe. 

The FBI investigation has already reverberated throughout college basketball. Assistant coaches Chuck Person of USC, Lamont Evans of Oklahoma State, Emanuel Richardson of Arizona and Tony Bland of USC have all been fired after being charged in the case. 

Louisville's board of trustees voted to fire head coach Rick Pitino and athletic director Tom Jurich after the program was named in the complaint against James Gatto, who is Adidas' director of global sports marketing.