Long, who took over past year shortly before Hurricane Harvey struck, said he didn't want the investigation to detract from preparations for a major storm was heading for the U.S.
During the question and answer session Long was asked if he thought all the laws and practices were followed.
"I would never intentionally run a program incorrectly", Long said at a FEMA meeting Thursday regarding the probe, per Politico. "Bottom line is if we made a mistakes on how a program is run, we'll work with OIG to get those corrected", Long said. "Doing something unethical is not part of my DNA and it is not part of my track record in my whole entire career". Politico reported Long was under investigation for possibly misusing government resources and personnel on weekend trips home to Hickory, North Carolina.
The reported investigation comes as FEMA prepares its response to Florence, a hurricane bearing down on the Carolinas that was downgraded to a tropical storm on Friday. He also said FEMA was "100% focused" on Florence.
"All questions about any potential investigation by the Office of the Inspector General should be directed to the IG".
He said Secretary Kirstjen Nielsen "is confident in the leadership at FEMA and their proven disaster management ability", he said.
Long reportedly began having a government driver take him home since he took control of FEMA previous year.
The investigation was confirmed by the agency.
Long is now one of several top Trump administration officials who have faced intense scrutiny of their travel habits.
Former Health and Human Services Secretary Tom Price resigned after his trips on private planes raised eyebrows. Veterans Affairs Secretary David Shulkin was sacked in March amid questionable travel charges and a growing rebellion in his agency about the privatization of medical care. He need only look at Secretary of Treasury Steve Mnuchin and Interior Secretary Ryan Zinke for examples of officials who misused taxpayer resources to jaunt around the country but have not suffered any consequences.