WICHITA – A Pratt company pleaded guilty Thursday in an oil and gas fraud scheme, according to U.S. Attorney Tom Beall.

Sonstone Trading LLC pleaded guilty to one count of wire fraud. In the plea, the company admitted it agreed to sell 3,000 barrels per month of crude oil to Parnon Industries. In fact, what Sonstone provided to Parnon was not crude oil. It was raw gas oil (RGO), which is a by-product obtained from recycling used motor oil. At sentencing, the court will determine the amount of loss. The government maintains the loss is more than $994,000. Sentencing is set for Aug. 10.

Charges against Sonstone executive David Lawson were dismissed.

For more information on oil and gas fraud from the Financial Fraud Enforcement Task Force, see www.stopfraud.gov/oil-gas-fwg.html .