The following statement is being issued by Levi & Korsinsky, LLP: To: All Persons or Entities who purchased Eagle Rock Energy Partners, L.P. stock prior to May 22, 2015. You are hereby notified that Levi & Korsinsky, LLP has commenced an investigation into the fairness of the sale of Eagle Rock Energy Partners, L.P. (NASDAQ: EROC) to Vanguard Natural Resources, LLC for 0.185 units of Vanguard per each unit of Eagle Rock owned, representing a value of $3.05 per share based on Vanguard's closing price as of May 21, 2015. To learn more about the investigation and your rights, go to: HTTP://ZLK.9NL.COM/EAGLE-ROCK-ENERGY or contact Joseph E. Levi, Esq. either via email at email@example.com or by telephone at (212) 363-7500, toll-free: (877) 363-5972. There is no cost or obligation to you. Levi & Korsinsky is a national firm with offices in New York, New Jersey, Connecticut and Washington D.C. The firm's attorneys have extensive expertise in prosecuting securities litigation involving financial fraud, representing investors throughout the nation in securities lawsuits and have recovered hundreds of millions of dollars for aggrieved shareholders. For more information, please feel free to contact any of the attorneys listed below. Attorney advertising. Prior results do not guarantee similar outcomes.