EUGENE, Ore. -- The NCAA is alleging Oregon violated the organization's regulations in the way it used recruiting services over the past four years.

The accusations were contained in two draft documents, labeled "Proposed Findings of Violations," obtained Friday in a public records request by several media outlets. While the documents use language that indicates the NCAA and the university agree to certain points, an athletic department spokesman says Oregon does not acknowledge any of the violations.

The NCAA has been looking into Oregon's recruiting practices since questions arose over a 2010 payment of $25,000 to Willie Lyles and his Houston-based recruiting service. Lyles had a relationship with a player from Texas who committed to Oregon.

Information that the university later produced that it said was from Lyles was largely outdated.

The draft documents released Friday, which are heavily redacted, suggests Oregon's use of three scouting services "did not conform" with NCAA rules, and the Ducks exceeded the number of coaches allowed to recruit.

The documents state that the scope and nature of the violations "demonstrate that the athletics department failed to adequately monitor the football program's use of recruiting or scouting services."

Oregon has not received a formal notice of allegations from the NCAA. The documents released Friday do not include any possible penalties.

In a letter to boosters on Friday, Oregon Athletic Director Rob Mullens reiterated his commitment to cooperating with the NCAA.

"While we have no specific timetable on the inquiry, we remain in close communication with the NCAA as the process advances cooperatively through each stage. Currently, pursuant to the NCAA's process, we are in constructive discussions with the NCAA on the draft of their proposed findings," he said in the letter.

Mullens also said the school continues to work with outside counsel on an independent assessment of the program.

The NCAA will not comment on ongoing investigations.