Twitter images from former UNC-Chapel Hill football players Kendric Burney and Marvin Austin were released by the University Tuesday in response to the NCAA investigation of the athletic program.

The images were made available after UNC received a formal letter of allegation from the NCAA including a request for copies of materials posted on social media sites regarding trips on which the student-athletes received impermissible benefits.

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The images include a photo of Austin and Miami Dolphins’ cornerback Vontae Davis, Austin and former UNC student-athlete Greg Little in Miami, and a photo posted by Austin of a $143 bill from The Cheesecake Factory.

In the 111-page response to the investigation the University said, “the student-athletes acknowledged receipt of travel accommodations, meals, entertainment expenses, and, in some instances, cash and jewelry from a wide range of ‘Providers,’ including agents, financial advisors, and former North Carolina football student-athletes.”

The latest photo was posted on June 15, 2010, before the Department of Athletics implemented changes to the student-athlete social network policy, asking athletes to limit information about one’s whereabouts and identify one coach or administrator who is responsible for monitoring the each athlete’s posts.

The University acknowledges that the student-athletes should not have received these improper benefits, it said in the release, and has detailed a number of self-imposed sanctions including vacating all victories from the 2008 and 2009 football seasons, surrendering three football scholarships a year for three years, paying a $50,000 fine and placing itself on two years of probation.