Washington (CNN) Federal Emergency Management Agency Administrator Brock Long said Sunday that he has no plans to resign amid a Department of Homeland Security probe into his travel using government resources.

Long told NBC's "Meet the Press " on Sunday that Nielsen has not asked for his resignation and that he's cooperating with the DHS inspector general's investigation.

"Secretary Nielsen has never asked me to resign," Long said. "We have a very functional and professional relationship. We talk every day. We are both solely focused on Florence."

Asked if he plans to resign, Long replied, "No. No, no, no, I'm here to serve my country every day. That's all I do."

A senior administration official confirmed to CNN last week that there is an ongoing investigation includes, but may not be limited to, whether Long misused government vehicles and personnel for his six-hour drives between his home in North Carolina and FEMA headquarters in Washington, DC. Politico first reported the existence of the investigation.

Also on Sunday, Long told CBS's "Face the Nation" that he has run the agency "the same way it ran for anybody before me."

"I have never made -- I would never intentionally violate any rules that I was aware of," he added.