Suits Say U.S. Impeded Audits for Oil Leases

Four government auditors who monitor leases for oil and gas on federal property say the Interior Department suppressed their efforts to recover millions of dollars from companies they said were cheating the government.

The accusations, many of them in four lawsuits that were unsealed last week by federal judges in Oklahoma, represent a rare rebellion by government investigators against their own agency.

The auditors contend that they were blocked by their bosses from pursuing more than $30 million in fraudulent underpayments of royalties for oil produced in publicly owned waters in the Gulf of Mexico.