Authorities back XM-Sirius satellite radio tie

WASHINGTON (Reuters) - U.S. antitrust authorities approved a proposed $4.38 billion purchase of XM Satellite Radio by Sirius Satellite Radio , the Justice Department said on Monday.

The deal is also being examined by the Federal Communications Commission, which is expected to follow the Justice Department's lead. The deal would combine the only two providers of satellite radio in the United States.

(Reporting by Randall Mikkelsen)

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