Air Force Maj. Andre McDonald, 40, of San Antonio, was arrested over the weekend and charged with murdering his wife, Andreen McDonald, 29

An Air Force major based in San Antonio was arrested over the weekend for allegedly killing his wife and using gasoline, an ax and a 'burn barrel' to dismember her body, which authorities said they found four days ago in a private lot six miles away from the couple's home.

Andre McDonald, 40, was charged with murder on Saturday after a pedestrian discovered the skull and bones of his wife, Andreen McDonald, 29, Thursday about 20 yards from a 50-acre private property in the 600 block of Specht Road just east of Joint Base San Antonio-Camp Bullis in the central Texas city.

Court documents obtained by KSAT-TV indicate the wife's remains were laid beneath wood and a dead cow's bones before they were set on fire.

Investigators also found some kind of plastic or synthetic material melted among the remains, according to an affidavit.

Bexar County Sheriff deputies took Andre McDonald into custody at the San Antonio home on Solitude Cove where he lived with his wife and the couple's young autistic daughter, who authorities said saw her father dismembering her mother's body.

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Andreen McDonald, 29, was last seen alive at a Pizza Hut with the couple's young daughter on February 28 before her husband reported her missing on March 1

Bexar County Sheriff deputies arrested Andre McDonald at his San Antonio home on Saturday

McDonald was arrested back in March for tampering with evidence after investigators found receipts he destroyed and threw away for items they say he purchased and allegedly used to dismember his wife's body

The unnamed child made comments to relatives about 'Andre hurting mommy' and even managed to recreate the scene where Andreen's remains were discovered, according to court records.

Reenacting the crime in a backyard, the little girl previously placed some small sticks over a doll before pouring a liquid on the pile and asking people for 'the fire,' according to Andre McDonald's arrest warrant.

Officials noted in court documents that the crime scene on Specht Road was very similar to the scene the child portrayed.

Andreen's loved ones told investigators that she previously told them if she was ever found dead, 'it was because Andre McDonald killed her,' according to the arrest warrant.

Authorities found Andreen McDonald's body on Thursday in the 600 block of Specht Road, located six miles away from the couple's San Antonio home

A pedestrian who was looking for cow bones found Andreen's skull and bones mixed in with some cow remains in a private lot on Specht Road in north San Antonio

The 29-year-old's mother, Hyacinth Smith, told News 4 San Antonio she knew Andre had a temper, but has no idea why he would want to kill her daughter.

'I don’t know what got into him this [time] but it must be the devil. I don't know,' Smith said.

Andreen McDonald, who owned her own assisted living business, was last seen alive on February 28, the day surveillance video from a local Pizza Hut showed her leaving the restaurant with her daughter.

Records obtained by investigators show Andreen's cellphone hasn't been used since the night of February 28.

McDonald was swarmed by reporters when he was brought into the county sheriff's office Saturday

Bexar County Sheriff Javier Salazar (pictured) said investigators have compiled quite a bit of evidence against McDonald

Andre McDonald reported his wife missing March 1 and was indicted on a charge of tampering with or fabricating evidence after authorities determined he bought a shovel, an ax, gasoline and a 'burn barrel' before tearing up the receipts and throwing them in the trash, where investigators found them later.

Court records show investigators also found blood and hair in the couple's bathroom after executing one of multiple March search warrants.

'It feels good in a certain since to say that the search for Andreen McDonald is officially over. We found her,' Sheriff Javier Salazar said during a Saturday afternoon press conference.

Now Andreen's loved ones are tasked with planning her funeral even though most of her body has not been recovered.

'What I said this morning is, "Andreen I am so sorry for what happen this way and you did not deserve it,”' the 29-year-old's mother told reporters. 'It’s not a full body. It’s just a couple bones and she don’t deserve that.'