GERING, Neb. (AP) — A western Nebraska man has been accused of stealing more than $580,000 worth of gas from his former employer.

38-year-old Ron Walker, of Mitchell, was arrested Monday morning. He faces a felony charge of theft. Court records do not list an attorney.

Walker is a former employee for Western Cooperative Company, also known as Westco. He is accused of selling stolen gasoline under fictitious contracts to customers. Records indicate more than $580,000 was deposited into his personal checking and savings accounts between January 2012 and October.

Walker is accused of giving customers receipts from Westco. CEO David Briggs says a customer’s inquiry into a fake account helped uncover the thefts.