SAN ANTONIO (AP) — Investigators say an Air Force major in San Antonio bought a shovel, an ax, gasoline and a “burn barrel” a day after his wife was reported missing and then tried to destroy the receipt.

The San Antonio Express-News reports that 40-year-old Andre McDonald was indicted Sunday on a charge of tampering with or fabricating evidence in connection to the disappearance of his 29-year-old wife, Andreen McDonald, who police believe is dead.

READ MORE: Increased Monthly Child Tax Credit Payments To Start In July

Bexar County Sheriff Javier Salazar says friends reported Andreen McDonald missing Friday and her husband purchased the materials Saturday morning.

READ MORE: Robert Durst Was Acquitted Of Murder In Texas, Now His Trial In California Resumes After A Long Delay

Investigators believe McDonald intended to use the items to dispose of his wife’s body.

MORE NEWS: Flash Flood Watch As Weeklong Wet Weather Stretch Drenches North Texas

Salazar says deputies have been searching wooded areas in North Bexar County for Andreen McDonald. He encourages anyone with information on her whereabouts to contact the department.