Two high school students have been arrested after authorities in Texas say they beheaded a llama and shot another one.

Harris County Precinct 1 Constable Alan Rosen says the two 16-year-old students were arrested Thursday and have each been charged with one count of animal cruelty and two counts of criminal trespass.

Rosen says the teenagers, who are students at Tomball High School, went onto the Figment Ranch in Cypress and decapitated one of the animals and shot the other in the neck on March 6. The llama that was shot survived.

Authorities say the motive for the incident is unclear at this time. The teenagers have not been identified.