Scott Brown (AP Photo)

Former senator Scott Brown (R-Mass.) said Wednesday that he will move beyond the "exploratory committee" phase and officially launch his campaign against Sen. Jeanne Shaheen (D-N.H.), according to a local report.

Brown made the announcement on the radio program "New Hampshire Today with Jack Heath," according to the show's Facebook page.

The former senator will make it even more official next week, he said.

Brown launched his exploratory committee on March 14. So-called "exploratory committees" are generally only symbolic steps toward running, and federal law doesn't distinguish them from a candidate officially entering a race. So Brown has technically been a candidate since he launched the committee.

That said, his announcement Wednesday erases any doubt that he would follow through and actually run against Shaheen, who is now a GOP target this year.