Kayla Gomez-Orozco. (Facebook)

Mexican national Gustavo Zavala-Garcia, 27, pleaded guilty on Aug. 22 to capital murder in the death of a 10-year-old girl who was his cousin, reported CBS Austin. Zavala-Garcia was sentenced to life without parole by the judge in the state district court of Tyler, Texas.

The young girl, Kayla Gomez-Orozco, was reported missing on Nov. 1, 2016, after she attended a church service in Tyler, which is about 90 miles south of Dallas.

Her body was found four days later, Nov 5, in the bottom of a well where she had been dumped.

Gustavo Zavala-Garcia. (Smith County Jail)

"In the indictment of Zavala-Garcia, prosecutors contend he attacked Kayla and sexually assaulted or attempted to sexually assault her after her kidnapping," reported CBS 19. "Prosecutors also contend he struck Kayla with and against a blunt object, asphyxiated her and drowned her."

"It is unclear what exactly caused her death, and at the time the indictment was released, Smith County District Attorney Matt Bingham declined to comment citing a restrictive and protective order," reported the CBS station.

According to Breitbart News, "Zavala-Garcia crossed the U.S.-Mexico border illegally sometime after 2014, when he was first deported for violent crime charges, having been arrested twice for assault that year."