The Louisiana Public Service Commission voted on Wednesday in favor of AT&T Inc's $39 billion bid for T-Mobile USA.

The commission, which regulates utility and transportation companies in Louisiana, said it voted 4 to 1 to recommend the merger be approved.

Louisiana is the second state to conclude a review of the deal and opt not to oppose AT&T's purchase of T-Mobile USA from Deutsche Telekom AG . Arizona also approved the transaction, while California, West Virginia and Hawaii continue their reviews.

Support for our merger is broad, it is deep and it continues to grow, an AT&T spokesman said of Louisiana's decision.

The deal ultimately requires approval from the Federal Communications Commission and Justice Department.

(Reporting by Jasmin Melvin; editing by Carol Bishopric)