'There's nothing there': Manafort demands DOJ investigate source of 'leaked' wiretap claims
Paul Manafort speaks to NBC News (screen grab)

Former Trump campaign manager Paul Manafort has responded to reports that federal prosecutors obtained a Foreign Intelligence Surveillance Act (FISA) warrant to wiretap him before and after last year's election.

"If true, it is a felony to reveal the existence of a FISA warrant, regardless of the fact that no charges emerged," the statement from Manafort's lawyers reads.

"The U.S. Department of Justice's Inspector General should immediately conduct an investigation into these leaks and to examine the motivations behind a previous administration's effort to surveil a political opponent," the statement continues.

He then encouraged the DOJ to release the contents of the wiretap to prove that "there's nothing there."

The statement, an unusual move for Manafort in the wake of investigations into his role in potential collusion between the Trump campaign and the Kremlin, follows the Trump administration's lead in calling for investigations into the "leakers" of potentially incriminating information.