SouthTrust Corp. president and chief operating officer Roy W. Gilbert Jr. said he plans to retire in February, a move that leaves the Birmingham, Ala.-based bank without a clear No. 2 executive or heir-apparent to chairman and CEO Wallace D. Malone Jr.

Mr. Gilbert, 57, said in a published statement that he plans to "spend more time with my family, family business interests, and civic endeavors." In a telephone interview, Mr. Malone added that Mr. Gilbert also suffered from migraine headaches.

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