After Cornett was arrested the following day, he reportedly told a detective he had acted out of “anger at illegal immigration.”

He also said he “fantasized” about flying to the U.S. border in a helicopter and “firing on undocumented migrants traveling into the United States in order ‘to deter’ other undocumented migrants from attempting to cross the border.”

On Wednesday, Cornett pleaded guilty to two counts of federal hate crimes involving attempts to kill, and one count of discharging a firearm during a federal crime of violence.

He’s scheduled to be sentenced on Nov. 13 and faces a mandatory 10-year sentence on the firearms violation and a maximum sentence of life imprisonment for the hate crimes.