Sprint Nextel Corp and Japan's SoftBank Corp <9984.T> entered into an agreement with U.S. authorities on the national security aspects of the Japanese company's pending $20.1 billion deal to win control of the wireless carrier.

The companies said on Wednesday they had received notice from the Committee on Foreign Investment saying that it had completed its review of the proposed deal and that there were no unresolved national security issues.

(Reporting by Sayantani Ghosh in Bangalore; Editing by Joyjeet Das)