The inspector general at the Department of Homeland Security is investigating whether Long improperly used agency vehicles to commute from Washington to North Carolina, where his family resides, according to a report by Politico.
The inspector general is looking into whether taxpayers inappropriately footed the bill for Long's trips, according to the report, citing three unnamed sources.
Misuse of government resources has come back to haunt past Trump administration officials.
Brock Long, who directs the Federal Emergency Management Agency, said he was "very aware" of a media report published earlier on Thursday regarding his travel habits, and that the agency would cooperate with any investigations.
"I would never intentionally run a program incorrectly", Long said. "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's not part of my track record in my whole entire career", said Long, who leads the Federal Emergency Management Agency.
Pope summons bishops for summit on sex-abuse prevention
Church officials said were "credible and substantiated" - that he had abused a 16-year-old boy nearly 50 years ago. German media reported Wednesday that a church-commissioned study detailed 3,677 abuse cases between 1946 and 2014.
Long would use a staff driver to drive him to North Carolina, Politico reported.
The news comes just hours before Hurricane Florence is expected to hit the coast of the Carolinas.
FEMA director of external affairs Jessica Nalepa addressed the Politico story in a statement saying Long and the organization "are focused on preparing for, responding to and recovering from Hurricane Florence". "At this time, we are fully focused on preparing for, responding to, and recovering from Hurricane Florence and the storms in the Pacific", DHS press secretary Tyler Houlton told Politico in a statement. "FEMA fully cooperates with all investigations conducted by the DHS OIG".
A top FEMA official attempted Wednesday to warn people in the path of Hurricane Florence but instead had to shoot down reporters' questions about whether the Trump administration wasted disaster funds on its illegal immigration agenda.
FEMA Administrator Brock Long speaks during a news conference at the National Hurricane Center as National Hurricane Center Director Ken Graham, right, looks on, Wednesday, May 30, 2018, in Miami.
The former head of the Environmental Protection Agency, Scott Pruitt, resigned in July after allegations of outsized security spending, first-class flights and a sweetheart condo lease.