OKLAHOMA CITY, Sept. 12, 2008 (GLOBE NEWSWIRE) -- On July 21, 2008, Federman & Sherwood filed the first class action lawsuit in the United States District Court for the Southern District of New York against SemGroup Energy Partners, L.P. (NasdaqGM:SGLP - News). Federman & Sherwood reminds current and former shareholders of SemGroup Energy Partners, L.P. that they only have until Friday, September 19, 2008 to move for appointment as a lead plaintiff in this case. The Complaint alleges violations of Section 10(b) and Section 20(a) of the Securities Exchange Act, and Rule 10b-5 promulgated thereunder.

If you purchased SemGroup Energy Partners, L.P. between February 20, 2008 and July 17, 2008 and wish to join this litigation as a plaintiff, please contact our office as soon as possible. Our firm seeks to recover damages on behalf of the Class. Federman & Sherwood has extensive experience and expertise in prosecuting securities litigation involving financial fraud. We represent investors throughout the country in shareholder litigation.

If you wish to join this class action or have further questions, please contact:

 William B. Federman
 FEDERMAN & SHERWOOD
 10205 North Pennsylvania Avenue
 Oklahoma City, OK 73120
 Email to: wfederman@aol.com - http://www.federmanlaw.com

More information on this and other class actions can be found on the Class Action Newsline at http://www.globenewswire.com/ca.

          Federman & Sherwood
          (405) 235-1560