DOI OIG

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Main entrance to the Department of the Interior building in Washington DC.

Our Mission

The mission of the Office of Inspector General is to provide independent oversight and promote excellence, integrity, and accountability within the programs, operations, and management of the U.S. Department of the Interior.

Complaint Hotline

Anyone with knowledge of fraud, waste, abuse, misconduct, or mismanagement involving the U.S. Department of the Interior should contact the Office of Inspector General hotline.

Semiannual Report to Congress

Read the latest report to Congress highlighting the OIG’s successful work from October 1, 2016, through March 31, 2017.

Recent Reports

November 16, 2017

Incomplete Documentation Identified During Investigation

We discovered issues with travel documentation during an investigation of Secretary Zinke’s travel.

Summary

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November 16, 2017

BIA Senior Police Officer Mishandled Seized Cash and Drug Evidence

Our investigation confirmed the senior officer kept in his office safe a “slush fund” of cash and drug evidence that had not been properly processed.

Summary

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November 16, 2017

Allegations Not Substantiated that Business Received Contracts Based on False Certifications

We confirmed that an electrical service and supply company received U.S. Bureau of Reclamation contracts under the Set-Aside for Small Business...

Summary

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November 16, 2017

Independent Auditors' Reports on the Tribal and Other Trust Funds and Individual Indian Monies Trust Funds Statements for Fiscal Years 2017 and 2016

KPMG issued a qualified opinion and an unmodified opinion on OST’s financial statements for fiscal years 2017 and 2016.

Summary

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November 13, 2017

Stronger Internal Controls Needed Over Indian Affairs Loan Guarantee Program

DCI’s internal controls were inadequate and did not provide reasonable assurance of meeting the loan guarantee program’s purpose and activities.

Summary

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November 07, 2017

OIG Assesses DOI Procedures to Ensure Proper Internal Controls for Accurate DATA Act Reporting

We reviewed the DOI’s internal controls in place over the data management and processes used to report financial and award data.

Summary

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OIG in the News

August 28, 2017

Las Vegas Businessmen Sentenced to Prison in Montana Public Corruption Case

GREAT FALLS - The United States Attorney’s Office announced that Zachary Brooke Roberts and Martin Gasper Mazzara were sentenced to 20 months of prison and are required to pay $2.5 million in restitution to the Chippewa Cree Tribe. The shell...

August 10, 2017

Press Release