Why was the Border Patrol involved?
All hands on deck; respond to active shooter. BP has checks and active patrolling around the area.
Border Patrol might do double-duty as local law enforcement in some of these border towns.
People here have been posting that CBP is all over south Texas. Maybe they heard on the radio that this guy was wanted for allegedly shooting his grandmother. We don’t know details.
I’ve only been there once and got stopped way north of the border and once they realized I was legal and by myself they let me through.