Federal agents are serving search warrants in at several locations connected with a Utah polygamous group.
The raids by the Internal Revenue Service and other agencies began Wednesday afternoon at one home and several offices associated with the Kingstons, including biodiesel company Washakie Renewable Energy.
A lawyer for the group, also known as the Davis County Cooperative Society, says members are cooperating fully. Attorney Mark Hansen says the investigation doesn't appear to be connected with polygamy.
Melodie Rydalch with the U.S. Attorney's Office for Utah said the agents are serving sealed warrants and declined to provide further details.
The U.S. Environmental Protection Agency fined Washakie $3 million last year to settle allegations it collected more federal subsidies than it earned.
The Kingstons have made headlines with cases involving runaway teens fleeing arranged marriages.