A teenager from Tennessee is accused of bludgeoning his mother to death with a baseball bat while her husband witnessed the horrifying act. The pair allegedly incinerated her remains in their backyard before misleading authorities by claiming she had traveled back to Costa Rica.

Gabriel Vilchez, 18, along with his 64-year-old stepfather, David Gardiner, faces charges of murder and corpse abuse following the tragic death of 47-year-old Silvia Vilchez.

The Sequatchie County Sheriff’s Office received multiple reports on October 28 regarding Silvia Vilchez’s disappearance. Gabriel Vilchez maintained that she had departed for her homeland.

However, a search conducted two days later at their Lewis Chapel residence, located about 30 miles from Chattanooga, revealed a disturbing scene in the home office.

Detective Bryan Wilkie described the findings during a preliminary hearing on Monday: “The garbage and walls were stained with red-brown marks. Blood covered the desk, printer, and baseboards.”

Subsequent investigations led to the discovery of Silvia Vilchez’s body in a fire pit.

Authorities took the younger Vilchez and Gardiner into custody. Vilchez allegedly admitted to beating his mother to death with the bat and said Gardiner hit her as well. He and his stepfather then reportedly rolled her up in the carpet and rolled her outside to a fire pit.

“He stated they were out there all night long feeding wood on the fire to keep it burning,” Wilkie said.

Gardiner apparently gave a much different story. He told authorities he is a “heavy sleeper” and slept through the beating and burning of the body, and insisted he knew nothing about what happened.

Skeptical of Gardiner’s story, prosecutors asked Wilkie what a body would smell like as it was being burned.

“It’s a pretty strong odor,” Wilkie said — the implication being that Gardiner would have noticed it.

Authorities have not publicly divulged a motive for the killing.

The judge ordered Gabriel Vilchez held in the Sequatchie County Jail without bond and Gardiner on a $250,000 bond. Their next court date is Jan. 30.