The Office of Inspector General of the U.S. Environmental Protection Agency is expanding the scope of the audit of travels by EPA Administrator Scott Pruitt to his home state of Oklahoma.

In an Oct. 5 memorandum, the EPA Office of Inspector General's Office of Audit announced the expansion of the review to include all travel by Pruitt through Sept. 30. Previously the audit sought to look at the EPA chief's travels through only July 31.

The Office of Inspector General launched the audit in a previous Aug. 28 memorandum to the agency's acting CFO, David Bloom, following a congressional request and hotline complaint of Pruitt's frequent taxpayer-funded trips to Oklahoma and their associated costs.

In addition, the audit is seeking to determine if EPA procedures were followed by other EPA staff and security personnel when traveling with or in advance of Pruitt. The Office of Audit is also determining whether EPA policies and procedures are sufficient in preventing travel-related fraud, waste and abuse by the agency's head.

The Office of Inspector General plans to work with the EPA’s Cincinnati Finance Center and the Office of the Chief Financial Officer to obtain needed information for the audit.