Two Texas brothers were arrested and charged in the killing of their stepfather for sexually abusing their sister.

Alexandro and Christian Trevino, as well as their friend Juan Eduardo Melendez, beat 42-year-old Gabriel Quintanilla and left him to die Thursday in a field in McAllen, Texas, after learning that Quintanilla had inappropriately touched their 9-year-old sister at an RV park located on the 1200 block of E. Moore, according to KRGV.