Christie: Subpoenaed by Feds and Cooperating [AUDIO]

Gov. Chris Christie said Monday night that his office is cooperating with a federal subpoena from the U.S. Attorney investigating Bridgegate while it conducts its own internal probe.

Governor Chris Christie in studio for Ask the Governor on February 3 (Annette Petriccione, Townsquare Media NJ)

On Townsquare Media's Ask The Governor program, the governor said important questions about the closures must be addressed. He then provided his own response.

"Did I authorize it, did I know about it, did I approve it, did I have any knowledge of it beforehand?" Christie asked. "The answer is still the same, it's unequivocally no."

Christie also confirmed federal officials have issued a Bridgegate subpoena to his office.

"They did that, and I understand why they did it -- we had already communicated to them that we would cooperate voluntarily -- they decided to sent a subpoena and that's fine," Christie said. "We are complying with that in the same way that we'll comply with the legislative subpoenas. As we get documents, we'll comply and cooperate with the U.S. Attorney's inquiry into this."

Christie's comments on Townsquare's Ask the Governor Monday night were his first on the investigations since former Port Authority official David Wildstein's lawyer said evidence exists that the governor knew about the Bridgegate lane closures as they were happening.

The governor reiterated that his own, internal Bridgegate probe is moving forward.

"What I'm curious about is, what happened here, and that why I've authorized an internal investigation," Christie said. "We've hired a national law firm to come in, being led by a former assistant U.S. Attorney who is leading an internal investigation and has done a lot of interviews, I know, already."

Following the dismissals of deputy chief of staff Bridget Anne Kelly and campaign manager Bill Stepien, Christie didn't deny the possibility of further personnel moves.

"I want to find out what happened here so I can make changes if necessary," Christie said. "If there's anybody else that needs to be held to account, I'll hold them to account and then make changes, so I can assure the people of New Jersey something like this won't happen again."

The governor wouldn't offer an opinion about what possible criminal charges could result from Bridgegate.

"I don't know all the facts yet, so for me to give an opinion would be irresponsible," Christie said. "Secondly, that's not my job, and it's inappropriate for me to comment on what the U.S. Attorney should do or might do. I just think it's wrong."