Oil and gas company Hilcorp San Juan agreed to pay $34.6 million as part of a settlement with the Department of Justice (DOJ) addressing allegations of False Claims Act violations regarding underpaid royalties on oil and natural gas produced from federal lands.

The settlement, announced Friday, resulted from a U.S. investigation into certain of Hilcorp’s leases in the San Juan Basin in northwest New Mexico and southwest Colorado and their associated royalty payments.