STEVENSON, Md.--(BUSINESS WIRE)--The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by the Board of Directors of AGL Resources, Inc. (“AGL” or the “Company”) (NYSE: GAS) relating to the proposed buyout of the Company by Southern Company. On August 24, 2015, the Company announced it had reached a definitive agreement for Southern Company to acquire AGL in a trans