The NCAA has decided not to punish Washington or former defensive line coach Tosh Lupoi after investigating allegations he broke NCAA rules by paying for a football recruit's online classes and tutoring.

NCAA director of enforcement Tom Hosty told University of Washington president Michael Young in a letter obtained by the Seattle Times that "the enforcement staff does not believe that further action is warranted" though the NCAA can. However, if additional information is developed, the staff reserves the right to look further into these matters."

Lupoi, who was hired by former UW coach Steve Sarkisian in 2012 but not retained this offseason by new coach Chris Petersen, responded to the NCAA's letter with his own statement that he posted on Twitter on Monday night.

"I want to thank the NCAA and the UW for their professionalism and thoroughness during this investigation," Lupoi wrote. "I stated from the beginning that an honest and thorough investigation would clear my name, and prove these attacks against me were untrue. The results speak for themselves."

Sarkisian had told ESPNLosAngeles.com in December that the allegations had played a role in him not hiring Lupoi at USC.