Louis Johnson, a former associate of guard O.J. Mayo's inner circle, met for six hours on Monday with investigators from the NCAA, Pac-10 and USC, according to a report on ESPN.com.

"The substance of the meeting is subject to a confidentiality agreement, and, out of respect for that, I'm not in a position to comment on the subject matter which was covered," said David Murphy, an attorney at the Los Angeles-based law office of Anthony Salerno.