The owner of Waco, Texas-based glass company Rocket Glass and Mirror pled guilty to tax fraud and making false statements to the government.

Sixty-two-year-old Douglas Lynn Lyon admitted to filing false tax returns and underreporting his business income from 2006-2012. Thursday, February 26, Lyon entered his guilty plea, and his sentencing was set for April 22 in the Western District of Texas.

According to court documents, “Lyon used generic invoices he obtained from an office supply store for these jobs rather than QuickBooks, which he used to record other jobs,” reads a report by The Waco Tribune-Herald. “This process allowed Lyon to conceal the gross receipts from the cash tickets from Rocket’s in-house bookkeeper.”

In that span, records that Lyon provided to a certified public accountant did not contain information about the “skimmed” amount of receipts, which totaled $937,890 in payments over the six-year period and resulted in a federal tax loss of $285,808, according to the report.

Federal authorities allege that Lyon cashed the checks from the payments that were unaccounted for at the bank where Rocket’s business account resides. He then deposited the cash in increments at a different bank where he had a personal account, and “used the funds concealed in this manner for his personal benefit.”

Lyon’s offense is punishable by a maximum of three years in prison and a fine totaling as much as $100,000, the report states.

Rocket Glass & Mirror was established in 1986 and serves Central Texas with residential and commercial glass and mirror needs, according to its website.