Northrop Grumman nears deal to purchase Orbital - Source

NEW YORK, Sept 17 (Reuters) - Northrop Grumman Corp neared an agreement to buy Orbital ATK Inc, in a transaction that could be announced as soon as Monday, according to a person familiar with the transaction.

Northrop Grumman declined to comment and Orbital did not immediately respond to a request for comment. The Wall Street Journal reported the deal earlier on Sunday. (Reporting by Jessica Resnick-Ault in New York and Mike Stone in Washington; Editing by Richard Chang)