Ala. Code § 5-5A-43

A bank shall disclose financial records of its customers pursuant to a lawful subpoena, summons, warrant or court order issued by or at the request of any state agency, political subdivision, instrumentality, or officer or employee thereof and served upon the bank. No bank, director, officer, employee or agent thereof shall be held civilly or criminally responsible for disclosure of financial records pursuant to a subpoena, summons, warrant or court order which on its face appears to have been issued upon lawful authority.