Item 1.01. Entry into a Material Definitive Agreement.

On December 13, 2012, Atlas Pipeline Partners, L.P. ("APL") entered into an amendment to its amended and restated credit agreement (the "Credit Agreement") with Wells Fargo Bank, National Association, as administrative agent, Wells Fargo Securities, LLC, as sole lead arranger, and the lenders party thereto, pursuant to which:

• APL's previously announced pending acquisition of three wholly-owned subsidiaries of Cardinal Midstream, LLC will be a permitted investment; and

• Centrahoma Processing, LLC, in which APL will own a 60% interest if the pending Cardinal acquisition is completed, will not be required to be a guarantor and provide a security interest in its assets.

This summary of the amendment does not purport to be complete and is qualified in its entirety by reference to the amendment, a copy of which is attached hereto as Exhibit 10.1.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

10.1 Amendment No. 3 to the Amended and Restated Credit Agreement

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