Atlas Pipeline Partners, L.P. Announces Public Offering of 5,000,000 Common Units.

PHILADELPHIA -- Atlas Pipeline Partners, L.P. (NYSE:APL) ("Atlas Pipeline" or the "Partnership") announced today that it intends to offer, subject to market conditions, 5,000,000 common limited partner units through a registered public offering. The Partnership also expects to grant the underwriters a 30-day option to purchase up to 750,000 additional common units to cover over-allotments, if any. Wachovia Securities, Citi, Lehman Brothers and UBS Investment Bank will act as joint book-running managers for this offering.

Atlas Pipeline plans to use the net proceeds of the offering to fund the termination of certain of its crude oil derivatives agreements that are associated with the ethane and propane portion of its natural gas liquids volume.

The common units will be offered and sold pursuant to an effective shelf registration statement on Form S-3 previously filed with the Securities and Exchange Commission. This press release does not constitute an offer to sell or a solicitation of an offer to buy any securities nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The offer is being made only through the prospectus supplement and accompanying base prospectus, which is part of a registration statement that became effective on September 7, 2005.

A copy of the prospectus supplement and accompanying base prospectus relating to this offering, when available, may be obtained from:

Wachovia Securities
Equity Syndicate Department
375 Park Avenue
New York, NY 10152
Email: [e-mail]

Citi
Brooklyn Army Terminal
Attn: Prospectus Delivery Dept.
140 58th Street
Brooklyn, NY 11220
Tel: [phone]

Lehman Brothers
c/o Broadridge
Integrated Distribution Services
1155 Long Island Avenue
Edgewood, NY 11717
Email: [e-mail]
Fax: [phone]

UBS Investment Bank
Attention: Prospectus Department
299 Park Avenue
New York, NY 10171
Toll free: 888-827-7275

Atlas Pipeline Partners, L.P. is active in the transmission, gathering and processing segments of the midstream natural gas industry. In the Mid-Continent region of Oklahoma, Arkansas, northern and western Texas and the Texas panhandle, the Partnership owns and operates eight gas processing plants and a treating facility, as well as approximately 7,900 miles of active intrastate gas gathering pipeline and a 565-mile interstate natural gas pipeline. In Appalachia, it owns and operates approximately 1,600 miles of natural gas gathering pipelines in western Pennsylvania, western New York and eastern Ohio. For more information, visit our website at www.atlaspipelinepartners.com or contact [e-mail].

Atlas Pipeline Holdings, L.P. is a limited partnership which owns and operates the general partner of Atlas Pipeline Partners, L.P., through which it owns a 2% general partner interest, all the incentive distribution rights and approximately 5.5 million common units of Atlas Pipeline Partners.

Atlas America, Inc. owns an approximate 64% limited partner interest in Atlas Pipeline Holdings, L.P., which holds the general partner interest and 5.5 million limited partner units of Atlas Pipeline Partners, L.P., and an approximate 47% common unit interest and all of the Class A and management incentive interests in Atlas Energy Resources, LLC. For more information, please visit our website at www.atlasamerica.com, or contact Investor Relations at [e-mail].

Certain matters discussed within this press release are forward-looking statements. Although Atlas Pipeline Partners, L.P. believes the expectations reflected in such forward-looking statements are based on reasonable assumptions, it can give no assurance that its expectations will be attained. Factors that could cause actual results to differ materially from expectations include financial performance, inability of Atlas Pipeline to successfully integrate the operations at the acquired systems, regulatory changes, changes in local or national economic conditions, changes in commodity prices and other risks detailed from time to time in Atlas Pipeline's reports filed with the SEC, including quarterly reports on Form 10-Q, reports on Form 8-K and annual reports on Form 10-K.